chore: add markdown linter

Author: lidel

.github/workflows/linter.yml

@@ -0,0 +1,25 @@
+name: Lint Markdown
+on:
+  workflow_dispatch:
+  push:
+
+###############
+# Set the Job #
+###############
+jobs:
+  build:
+    name: Lint Markdown Docs
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v2
+        with:
+          # Full git history is needed to get a proper list of changed files within `super-linter`
+          fetch-depth: 0
+      - name: Lint
+        uses: github/super-linter/slim@v4
+        env:
+          VALIDATE_ALL_CODEBASE: false
+          VALIDATE_MARKDOWN: true
+          DEFAULT_BRANCH: main
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}