add workflow for formatting md code

.github/workflows/prettier.yaml

@@ -0,0 +1,26 @@
+name: Format md files
+
+on:
+  pull_request:
+    branches: 
+    - main
+    - release
+
+jobs:
+  prettier:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          # Make sure the actual branch is checked out when running on pull requests
+          ref: ${{ github.head_ref }}
+          # This is important to fetch the changes to the previous commit
+          fetch-depth: 0
+
+      - name: Prettify code
+        uses: creyD/[email protected]
+        with:
+          # This part is also where you can pass other options, for example:
+          prettier_options: --write **/*.md