[CONFIG] Github Actions: markdown-lint flow added.

Author: Gonzalo Diaz

.github/workflows/markdown-lint.yml

@@ -0,0 +1,36 @@
+name: Markdown Lint
+
+on:
+  push:
+    branches: [ main, develop, feature/* ]
+  pull_request:
+    branches: [ main ]
+
+permissions: read-all
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        node-version: [20.x]
+        # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Set up Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v4
+      with:
+        node-version: ${{ matrix.node-version }}
+
+    - name: Install dependencies
+      run: npm install -g markdownlint-cli
+
+    - name: Lint
+      run: markdownlint '**/*.md' --ignore node_modules && echo '✔  Your code looks good.'
+