Merge pull request #152 from MridulS/fork_docs

FIX: CI doc building from forks

Author: SimonHeybrock

template/.github/workflows/docs.yml

@@ -47,6 +47,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           ref: ${{ inputs.branch == '' && github.ref_name || inputs.branch }}
+          repository: ${{ github.event.pull_request.head.repo.full_name }}
           fetch-depth: 0  # history required so cmake can determine version
       - uses: actions/setup-python@v5
         with: