Add no-duplicate-categories to prevent duplicate PR entries in release notes

- Added 'no-duplicate-categories: true' to prevent PRs from appearing in multiple categories

- Standardized label format to use 'labels:' array format for consistency

When a PR has multiple labels matching different categories, it will now appear only in the first matching category.

Author: leecalcote

.github/release-drafter.yml

@@ -1,5 +1,6 @@
 name-template: 'Meshery Adapter for Consul v$NEXT_PATCH_VERSION'
 tag-template: 'v$NEXT_PATCH_VERSION'
+no-duplicate-categories: true
 categories:
   - title: '🚀 Features'
     labels:
@@ -16,7 +17,8 @@ categories:
       - 'area/ci'
       - 'area/tests'
   - title: 📖 Documentation
-    label: area/docs 
+    labels:
+      - rea/docs 
 change-template: '- $TITLE @$AUTHOR (#$NUMBER)'
 template: |
   ## What's New