Update CONTRIBUTING.md with comments field

Added comments field to contribution guidelines.

Author: VR-Rathod

CONTRIBUTING.md

@@ -36,9 +36,10 @@ seoTitle: <Page Name> Complete Guide – <Short Description>
 description: "Comprehensive <topic> reference covering <key topics>."
 keywords: "<keyword1>, <keyword2>, ..., VR-Rathod, Code-Note, code note vr, vr book , <You'r name / your code tags>"
 displayTitle: Better Title  # This is title of page (not required for  all page)
-- `seoTitle` — Keep under 60 characters. Format: `Topic Name – Subtitle`
-- `description` — 1-2 sentences, 120-160 characters. Mention key subtopics.
-- `keywords` — Comma-separated. Always end with the standard author tags.
+`seoTitle` — Keep under 60 characters. Format: `Topic Name – Subtitle`
+`description` — 1-2 sentences, 120-160 characters. Mention key subtopics.
+`keywords` — Comma-separated. Always end with the standard author tags.
+comments: false/true (For Enabling or disable comments)
 ```
 
 ### For Single Writer