Run workflow on forks and main repo

Author: eshanrnh

.github/workflows/check-broken-pr-links.yml

@@ -1,12 +1,17 @@
 name: Check Links in Pull Requests
 
 on:
-  pull_request:
+  pull_request_target:           # changed from pull_request
     branches:
       - main
     paths:
       - '**/*.md'
 
+permissions:
+  contents: read                # allows reading the repo
+  pull-requests: write          # allows posting PR comments
+
+
 jobs:
   check-links:
     runs-on: ubuntu-latest