Update GitHub token in workflow configuration

Author: qwertygc

.github/workflows/main.yml

@@ -15,5 +15,5 @@ jobs:
       - name: Deploy MkDocs
         uses: mhausenblas/mkdocs-deploy-gh-pages@master
         env:
-          GITHUB_TOKEN: ${{ secrets.GH_PAT }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}