ci: autogenerate vimdoc

.github/workflows/ci.yaml

@@ -0,0 +1,17 @@
+name: Demicolon CI
+on: [push]
+jobs:
+  docs:
+    if: github.ref == 'refs/heads/main'
+    name: Pandoc to Vimdoc
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: panvimdoc
+        uses: kdheepak/panvimdoc@main
+        with:
+          vimdoc: demicolon
+      - uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          commit_message: "docs: auto generate vimdoc"
+          branch: ${{ github.head_ref }}