add spell check in CI on PR

.github/workflows/spellcheck.yml

@@ -0,0 +1,29 @@
+# This workflow checks for common grammar and spelling mistake in markdown docs files.
+name: Spellcheck
+on: workflow_dispatch
+
+jobs:
+  build:
+    name: Spellcheck
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout 🛎️
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Install ⚙️
+        run: yarn install --frozen-lockfile
+
+      - name: Spellcheck 📝
+        uses: rojopolis/[email protected]
+        with:
+          source_files: docs/**/*.md docs/**/*.mdx
+          task_name: Markdown
+          output_file: spellcheck-output.txt
+
+      - name: Output Spellcheck Results 📝
+        uses: actions/upload-artifact@v3
+        with:
+          name: Spellcheck Output
+          path: spellcheck-output.txt