fix: add write permissions to terraform-docs workflow

- Add contents: write permission for git push operations
- Add pull-requests: write for PR interactions
- Resolves github-actions[bot] permission denied error

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

Co-Authored-By: Claude <[email protected]>

Author: vjdhama

.github/workflows/terraform-docs.yaml

@@ -12,6 +12,9 @@ env:
 jobs:
   generateDocs:
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4