Merge pull request #65 from beman-project/add-basic-documentation

fix the doxygen config file for the github action

Author: dietmarkuehl

.github/workflows/doxygen-gh-pages.yml

@@ -16,3 +16,4 @@ jobs:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           branch: gh-pages
           folder: docs/html
+          config_fie: docs/Doxyfile