Fix to run check-docs-changes worflow in forks (#1710)

* Update checkout as option in update api docs action

* Change pull_request to pull_request_target

Author: kumaranvpl

.github/workflows/docs_update-references.yaml

@@ -1,7 +1,7 @@
 name: Generate API References documentation
 
 on:
-  pull_request:
+  pull_request_target:
     types:
       - opened
       - synchronize
@@ -22,6 +22,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+        with:
+          repository: ${{ github.event.pull_request.head.repo.full_name }}
+          ref: ${{ github.head_ref }}
       - name: Set up Python
         uses: actions/setup-python@v5
         with: