Fix forgejo skill: remove non-existent pr review command

The fj CLI doesn't have a `pr review` subcommand. Updated documentation
to reflect actual available commands (pr comment for feedback).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

skills/forgejo/SKILL.md

@@ -57,10 +57,8 @@ fj pr create "<title>" --body "Closes #<issue>"
 # PR status
 fj pr status <number>                # CI status, reviews
 
-# Review
-fj pr review <number> --approve
-fj pr review <number> --request-changes --body "<feedback>"
-fj pr review <number> --comment --body "<comment>"
+# Comment on PR
+fj pr comment <number> "<comment>"
 
 # Merge
 fj pr merge <number>