ci: add markdown format check

Author: S1M0N38

.github/workflows/code_quality.yml

@@ -27,7 +27,7 @@ jobs:
           version: latest
           args: format --check
   pyright:
-    name: Type Check
+    name: Type Check & Markdown Format
     runs-on: ubuntu-latest
     needs: ruff
     steps:
@@ -45,6 +45,10 @@ jobs:
         run: |
           uv venv
           uv sync --dev
+      - name: Check markdown formatting
+        run: |
+          source .venv/bin/activate
+          mdformat --check .
       - name: Run pyright
         run: |
           source .venv/bin/activate