[PR #6744/13e9e4b1 backport][stable-7] Add more semantic markup (#6747)

Add more semantic markup (#6744)

Add more semantic markup.

(cherry picked from commit 13e9e4b196)

Co-authored-by: Felix Fontein <felix@fontein.de>

plugins/modules/github_webhook.py

@@ -61,7 +61,7 @@ options:
       - >
         A list of GitHub events the hook is triggered for. Events are listed at
         U(https://developer.github.com/v3/activity/events/types/). Required
-        unless C(state) is C(absent)
+        unless O(state=absent)
     required: false
     type: list
     elements: str