ci(doc): prefix commit with 'docs'

Author: moyiz

.github/workflows/doc.yaml

@@ -31,6 +31,6 @@ jobs:
         run: nvim --headless --clean -c "helptags doc/" -c qa
       - uses: stefanzweifel/git-auto-commit-action@v5
         with:
-          commit_message: "doc: auto generate"
+          commit_message: "docs: auto generate"
           branch: ${{ github.head_ref }}
           file_pattern: doc