Misc doc edits for release.

release_notes/voltha_2.12.rst
-----------------------------
  o Update version and URLs for kafka
  o Update version and URLs for olt

howto/release/tasks/index.rst
howto/release/tasks/golang_gofmt_syntax.rst
-------------------------------------------
  o Document std golang formatting with gofmt -s -e -w.
  o Document content with references (commit message, make lint)
    diff --git a/howto/release/tasks/index.rst b/

Include a few edits from gerrit id I6e9658c23f436f83d423f74e01b2966943d2fe08

Change-Id: I27ad46ddd6673a9e35e794b1d3e8bb0644e8260d
diff --git a/VERSION b/VERSION
index 404df31..562510f 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.12.22
+2.12.23
diff --git a/howto/code/linting.rst b/howto/code/linting.rst
index aaba632..b75b96a 100644
--- a/howto/code/linting.rst
+++ b/howto/code/linting.rst
@@ -277,7 +277,7 @@
 Sources:
 
 - `makefiles/lint <https://gerrit.opencord.org/plugins/gitiles/onf-make/+/refs/heads/master/makefiles/lint/>`__
-- `makefiles/lint/robot.mk <https://gerrit.opencord.org/plugins/gitiles/onf-make/+/refs/heads/master/makefiles/lint/robot.mk>`_
+- `makefiles/lint/robot/*.mk <https://gerrit.opencord.org/plugins/gitiles/onf-make/+/refs/heads/master/makefiles/lint/robot>`_
 
 |
 
diff --git a/howto/release/tasks/go_mod_update.rst b/howto/release/tasks/go_mod_update.rst
new file mode 100644
index 0000000..171046f
--- /dev/null
+++ b/howto/release/tasks/go_mod_update.rst
@@ -0,0 +1,52 @@
+.. _Release Task Golang Mod Update:
+
+GOLANG: Update go.mod opencord package versions
+===============================================
+
+Update go package version dependencies.
+
+NOTE: Files in the vendor/ directory should not be modified
+
+- Sources are checked in purely for bootstrapping.
+- Ideally vendor/ will be deleted and populated dynamically by git submodules.
+
+.. code-block:: shell-session
+   :caption: Update copyrigth notice ending date.
+
+   % git clone ssh://gerrit.opencord.org:29418/ofagent-go.git
+   % cd ofagent-go
+
+   # ---------------------------------------
+   # Preview packages and versions to modify
+   # ---------------------------------------
+   % grep opencord $(find . ! -path 'vendor/*' -name '*.go' -print)
+
+   # --------------------------------------------------------------
+   # Edit go.mod and update dependencies as needed
+   # --------------------------------------------------------------
+   % ${EDITOR} $(find . ! -path 'vendor/*' -name '*.go' -print)
+
+   % make distclean
+
+   # ------------------------------
+   # Bulk fix golang linting errors
+   # ------------------------------
+   % find . ! -path 'vendor/*' -name '*.go' -print0 | xargs -0 gofmt -s -e -w
+
+   # ---------------------------
+   # Invoke go mod vendor
+   # Invoke go mod tidy
+   # From within a local sandbox
+   # ---------------------------
+   % make mod-update LOCAL_FIX_PERMS=1
+
+   # -------------------------
+   # Check for syntax problems
+   # -------------------------
+   % make lint
+
+   # -----------------------------------
+   # Pre-screen for jenkins job problems
+   # -----------------------------------
+   % make build
+   % make test
diff --git a/howto/release/tasks/golang_gofmt_syntax.rst b/howto/release/tasks/golang_gofmt_syntax.rst
index 0f6bb1e..c34e2de 100644
--- a/howto/release/tasks/golang_gofmt_syntax.rst
+++ b/howto/release/tasks/golang_gofmt_syntax.rst
@@ -6,9 +6,12 @@
 Use the gofmt command to reformat golang sources gathered outside the vendor/ directory.
 
 .. code-block:: shell-session
-   :caption:
+   :caption: Golang source formatting
 
+   % git clone ssh://gerrit.opencord.org:29418/voltha-lib-go.git
+   % cd voltha-lib-go
+
+   % make sterile
    % make golang-fmt
 
-   % cd mysandbox
    % find . ! -path './vendor/\*' -name '*.go' -print | xargs -n1 gofmt -s -e -w
diff --git a/howto/release/tasks/index.rst b/howto/release/tasks/index.rst
index 9507df2..3e305e4 100644
--- a/howto/release/tasks/index.rst
+++ b/howto/release/tasks/index.rst
@@ -14,14 +14,29 @@
 BUILD[pre-release]: dependency and module updates
 -------------------------------------------------
 
-- make go mod-update
-- Update copyright notices :ref:`Release Task Copyright`
+- :ref:`Release Task Golang Mod Update`
+- :ref:`Release Task Copyright`
 
 Standard syntax & formatting
 ----------------------------
 
 - Golang syntax fomatting :ref:`Release Task Golang Syntax`
 
+golang
+^^^^^^
+
+Use the gofmt command to reformat golang sources gathered outside the vendor/ directory.
+
+.. code-block:: shell-session
+   :caption: Standard syntax formatting for golang source
+
+   % make golang-fmt
+
+   % cd mysandbox
+   % find . ! -path './vendor/\*' -name '*.go' -print0 \
+     | xargs -n1 gofmt -s -e -w
+
+
 Chart.yaml
 ----------
 
diff --git a/overview/release_process.rst b/overview/release_process.rst
index 3157f7c..5abf658 100644
--- a/overview/release_process.rst
+++ b/overview/release_process.rst
@@ -1,5 +1,6 @@
 VOLTHA Release process
 ======================
+
 This document describes the technical steps of VOLTHA's release process.
 The document assumes you are creating a release named voltha-X.Y, where X is the major release versio
 and the y is the minor.
diff --git a/overview/troubleshooting.rst b/overview/troubleshooting.rst
index 12404b4..1f08de9 100644
--- a/overview/troubleshooting.rst
+++ b/overview/troubleshooting.rst
@@ -36,7 +36,7 @@
 
 And then in wireshark select ``File -> Import from Hex Dump``
 
-Or you can decode a single packet using this online tool: `https://hpd.gasmi.net <https://hpd.gasmi.net>`_
+Or you can decode a single packet using this online tool: ``http://hpd.gasmi.net``.
 
 To get all the EAPOL packets: ``grep -e '888e' packets.trace``
 
diff --git a/release_notes/voltha_2.12.rst b/release_notes/voltha_2.12.rst
index e5c06de..b131131 100644
--- a/release_notes/voltha_2.12.rst
+++ b/release_notes/voltha_2.12.rst
@@ -217,12 +217,12 @@
      - `X <https://github.com/opencord/igmpproxy/releases/tag/2.9.0>`__
      -
    * - `kafka <https://gerrit.opencord.org/gitweb?p=kafka-onos.git;a=summary>`__
-     - `2.13.1 <https://mvnrepository.com/artifact/org.opencord/kafka/2.13.1>`__
-     - `X <https://mvnrepository.com/artifact/org.opencord/kafka-api/2.13.1>`__
-     - `X <https://mvnrepository.com/artifact/org.opencord/kafka-app/2.13.1>`__
-     - `X <https://mvnrepository.com/artifact/org.opencord/kafka/2.13.1>`__
-     - `X <https://gerrit.opencord.org/plugins/gitiles/kafka-onos/+/refs/tags/2.13.1>`__
-     - `X <https://github.com/opencord/kafka-onos/releases/tag/2.13.1>`__
+     - `2.13.2 <https://mvnrepository.com/artifact/org.opencord/kafka/2.13.2>`__
+     - `X <https://mvnrepository.com/artifact/org.opencord/kafka-api/2.13.2>`__
+     - `X <https://mvnrepository.com/artifact/org.opencord/kafka-app/2.13.2>`__
+     - `X <https://mvnrepository.com/artifact/org.opencord/kafka/2.13.2>`__
+     - `X <https://gerrit.opencord.org/plugins/gitiles/kafka-onos/+/refs/tags/2.13.2>`__
+     - `X <https://github.com/opencord/kafka-onos/releases/tag/2.13.2>`__
      - ``N``
    * - `maclearner <https://gerrit.opencord.org/plugins/gitiles/mac-learning>`__
      - `1.2.3 <https://mvnrepository.com/artifact/org.opencord/maclearner/1.2.3>`__
@@ -242,12 +242,12 @@
      -
    * - `olt <https://gerrit.opencord.org/gitweb?p=olt.git;a=summary>`__
      - `5.2.6 <https://mvnrepository.com/artifact/org.opencord/olt/5.2.6>`__
-     - `X <https://mvnrepository.com/artifact/org.opencord/olt-api/5.2.5>`__
-     - `X <https://mvnrepository.com/artifact/org.opencord/olt-app/5.2.5>`__
-     - `X <https://mvnrepository.com/artifact/org.opencord/olt/5.2.5>`__
-     - `X <https://gerrit.opencord.org/plugins/gitiles/olt/+/refs/tags/5.2.5>`__
-     - `X <https://github.com/opencord/olt/releases/tag/5.2.5>`__
-     - ``N``
+     - `X <https://mvnrepository.com/artifact/org.opencord/olt-api/5.2.6>`__
+     - `X <https://mvnrepository.com/artifact/org.opencord/olt-app/5.2.6>`__
+     - `X <https://mvnrepository.com/artifact/org.opencord/olt/5.2.6>`__
+     - `X <https://gerrit.opencord.org/plugins/gitiles/olt/+/refs/tags/5.2.6>`__
+     - `X <https://github.com/opencord/olt/releases/tag/5.2.6>`__
+     -
    * - `olttopology <https://gerrit.opencord.org/plugins/gitiles/olttopology/>`__
      - `1.3.1 <https://mvnrepository.com/artifact/org.opencord/olttopology/1.3.1>`__
      - `X <https://mvnrepository.com/artifact/org.opencord/olttopology-api/1.3.1>`__