Clean up module documentation (#36909)

* Clean up module documentation

This PR includes:
- Removal of `default: None` (and variations)
- Removal of `required: false`
- Fixing booleans and `type: bool` where required

* Fix remaining (new) validation issues

lib/ansible/modules/database/mssql/mssql_db.py

@@ -26,45 +26,35 @@ options:
     description:
       - name of the database to add or remove
     required: true
-    default: null
     aliases: [ db ]
   login_user:
     description:
       - The username used to authenticate with
-    required: false
-    default: null
   login_password:
     description:
       - The password used to authenticate with
-    required: false
-    default: null
   login_host:
     description:
       - Host running the database
-    required: false
   login_port:
     description:
       - Port of the MSSQL server. Requires login_host be defined as other then localhost if login_port is used
-    required: false
     default: 1433
   state:
     description:
       - The database state
-    required: false
     default: present
     choices: [ "present", "absent", "import" ]
   target:
     description:
       - Location, on the remote host, of the dump file to read from or write to. Uncompressed SQL
         files (C(.sql)) files are supported.
-    required: false
   autocommit:
     description:
       - Automatically commit the change only if the import succeed. Sometimes it is necessary to use autocommit=true, since some content can't be changed
         within a transaction.
-    required: false
-    default: false
-    choices: [ "false", "true" ]
+    type: bool
+    default: 'no'
 notes:
    - Requires the pymssql Python package on the remote host. For Ubuntu, this
      is as easy as pip install pymssql (See M(pip).)