tagging docs fragment - comment cleanup (C&P) (#857) (#867)

[PR #857/de57ec4a backport][stable-3] tagging docs fragment - comment cleanup (C&P)

This is a backport of PR #857 as merged into main (de57ec4).
SUMMARY
When creating the docs fragment in #844 the comment above the fragments was left behind from the fragment I used as a base, tweak the comment.
ISSUE TYPE

Docs Pull Request

COMPONENT NAME
plugins/doc_fragments/tags.py
ADDITIONAL INFORMATION

Reviewed-by: Mark Chappell <None>

plugins/doc_fragments/tags.py

@@ -9,7 +9,7 @@
 
 class ModuleDocFragment(object):
 
-    # Minimum requirements for the collection
+    # Standard Tagging related parameters
     DOCUMENTATION = r'''
 options:
   tags:
@@ -34,7 +34,8 @@ class ModuleDocFragment(object):
     required: false
 '''
 
-    # Minimum requirements for the collection
+    # Some modules had a default of purge_tags=False, this was generally
+    # deprecated in release 4.0.0
     DEPRECATED_PURGE = r'''
 options:
   tags: