VOL-4964 - Update core contributors list

Last two pull requests including VERSION=2.12.0 did not initiate publishing
content to docs.voltha.org.  Create another pull request with release VERSION
string and modified content to see if that will trigger a release.

Change-Id: Ica3edca4ba2ca5bf7b8fc75eb4c1f688a671a456
diff --git a/VERSION b/VERSION
index d8b6989..3cf561c 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.12.0
+2.12.1
diff --git a/howto/code/linting.rst b/howto/code/linting.rst
index 9550d54..84e3692 100644
--- a/howto/code/linting.rst
+++ b/howto/code/linting.rst
@@ -21,8 +21,9 @@
     UNSTABLE=                     Build targets prone to failure (lint-helm)
 
     [PYTHON]
-    lint-flake8                   Syntax check using pylint and flake8
-    lint-pylint                   Syntax check using pylint and flake8
+    lint-python                   Syntax check using available python tools
+    lint-flake8                   Syntax check using tool flake8
+    lint-pylint                   Syntax check using tool pylint
 
 |
 
diff --git a/howto/edit_voltha_docs.rst b/howto/edit_voltha_docs.rst
index 540b734..32bcf9d 100644
--- a/howto/edit_voltha_docs.rst
+++ b/howto/edit_voltha_docs.rst
@@ -34,7 +34,7 @@
 Writing Docs
 """"""""""""
 
-Docs written using sphinx: http://www.sphinx-doc.org
+Docs written using sphinx: https://www.sphinx-doc.org/en/master/
 
 Documentation is done in reStructuredText or Markdown, but only ``.rst`` files
 can contain embedded diagrams.
diff --git a/overview/lab_setup.rst b/overview/lab_setup.rst
index 177143e..d935d64 100644
--- a/overview/lab_setup.rst
+++ b/overview/lab_setup.rst
@@ -37,8 +37,7 @@
 -------------------
 
 The first thing you need to do is to install ``lxd`` on your server. To do that
-you can follow `this guide
-<http://tutorials.ubuntu.com/tutorial/tutorial-setting-up-lxd-1604>`_
+you can follow `this guide <https://ubuntu.com/tutorials/setting-up-lxd-1604>`_
 
 Once ``lxd`` is successfully installed you need to initialize it with:
 
diff --git a/release_notes/voltha_2.2.rst b/release_notes/voltha_2.2.rst
index 7d029a6..cb67a45 100644
--- a/release_notes/voltha_2.2.rst
+++ b/release_notes/voltha_2.2.rst
@@ -36,7 +36,7 @@
 -------------
 
 - Operator Workflows Defined: https://docs.google.com/presentation/d/1FP42UviD9Ln-Pjrho5cEOT4mxD1SjszjJUD1MA3jdKY/edit
-- Several Design docs published: https://drive.google.com/drive/u/1/folders/1sNbD1oMA1twG4Kqn2e77ExzXR81qC6LK
+- Several Design docs published: https://drive.google.com/drive/folders/1sNbD1oMA1twG4Kqn2e77ExzXR81qC6LK
 
 Known Issues
 ------------