Revert "Do not use the pull rewuest repo name"

This reverts commit 0b3cd0a.

.github/workflows/terraform-docs.yml

@@ -13,6 +13,7 @@ jobs:
     steps:
       - uses: actions/checkout@8f4b7f84864484a7bf31766abe9204da3cbe65b3 # v3.5.0
         with:
+          repository: ${{ github.event.pull_request.head.repo.full_name }}
           ref: ${{ github.event.pull_request.head.ref }}
 
       - name: Render documentation and push changes back to branch