[TSD]Adding toggle annotations for wiki settings

1.  

   1. Description

This PRs adds annotations for the wiki settings listed below:

• WIKI_ACCOUNT_HANDLING

• WIKI_ANONYMOUS

• WIKI_ENABLED

• WIKI_LINK_LIVE_LOOKUPS

• WIKI_USE_BOOTSTRAP_SELECT_WIDGET

The behavior of the platform is not affected

1.  

   1. Supporting information
      This is part of the doc-a-thon efforts.

1.  

   1. Reference
      https://github.com/edx/django-wiki
      https://github.com/edx/django-wiki/blob/edx_release/wiki/conf/settings.py

1.  

   1. Testing instructions
      It does not apply

1.  

   1. Deadline
      None