Update github workflow panvimdocs

Author: csessh

.github/workflows/docs.yml

@@ -1,12 +1,17 @@
+name: panvimdocs
+
 on:
   push:
     branches:
       - main
-name: docs
+
+permissions:
+  contents: write
 
 jobs:
   docs:
     runs-on: ubuntu-latest
+    name: pandoc to vimdoc
     steps:
       - uses: actions/checkout@v3
       - name: panvimdoc
@@ -20,6 +25,4 @@ jobs:
         uses: stefanzweifel/git-auto-commit-action@v4
         with:
           commit_message: "auto-generate vimdoc"
-          commit_user_name: "github-actions[bot]"
-          commit_user_email: "github-actions[bot]@users.noreply.github.com"
-          commit_author: "github-actions[bot] <github-actions[bot]@users.noreply.github.com>"
+          branch: ${{ github.head_ref }}