Update Actions with Lychee and GitHub Token (#17)

Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>

.github/workflows/format.yml

@@ -7,7 +7,7 @@ name: Ultralytics Actions
 on:
   push:
     branches: [main,master]
-  pull_request:
+  pull_request_target:
     branches: [main,master]
 
 jobs:
@@ -17,7 +17,9 @@ jobs:
       - name: Run Ultralytics Formatting
         uses: ultralytics/actions@main
         with:
+          token: ${{ secrets.GITHUB_TOKEN }}  # automatically generated
           python: true
           docstrings: true
           markdown: true
           spelling: true
+          links: true