Cosmetic documentation changes.

howto/accounts.rst
howto/ssh_access.rst
--------------------
  o Fix gerrit port, should be 29418 VS 29419
  o Mention the 'AddKeysToAgent' attribute, useful option.

howto/docs.voltha.org/quickstart.rst
------------------------------------
  o Remove blank lines
  o Separate list items with comma.

Change-Id: I197fd1ebf71609791dddeb41e42c738317ac6b68
diff --git a/howto/ssh_access.rst b/howto/ssh_access.rst
index d7d9120..b762688 100644
--- a/howto/ssh_access.rst
+++ b/howto/ssh_access.rst
@@ -13,7 +13,7 @@
 - Login and configure gerrit
 
 - Verify your ssh connection (manual/explicit args)
-   - ssh -T -p 29419 -i ~/.ssh/id_gerrit tux@gerrit.opencord.org
+   - ssh -T -p 29418 -i ~/.ssh/id_gerrit tux@gerrit.opencord.org
       - -T # disable pseudo terminal access, simple verify
       - -p(port)
       - -i(dentity) # ssh key
@@ -40,11 +40,15 @@
 .. sourcecode:: shell
 
    FILE: ~/.ssh/config
+   # -----------------------------------------------------------------------
+   # AddKeysToAgent yes      auto ssh-add key for reuse this login session.
    # IdentitiesOnly yes      only use identity provided, no fallback
+   # -----------------------------------------------------------------------
 
    Host github.com
       IdentityFile ~/.ssh/github.com/id_ed25519
       IdentitiesOnly yes
+      AddKeysToAgent yes
       # (default) Port 22
       User tux
 
@@ -52,6 +56,7 @@
       Hostname gerrit.opencord.org
       IdentityFile ~/.ssh/gerrit.opencord.org/id_ed25519
       IdentitiesOnly yes
+      AddKeysToAgent yes
       Port 29418
       User tux@opennetworking.org