Use official markdownlint github action

Author: badouralix

.github/workflows/lint.yaml

@@ -12,9 +12,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
-    - uses: avto-dev/markdown-lint@v1
+    - uses: DavidAnson/markdownlint-cli2-action@v7
       with:
-        args: "**/*.md"
+        globs: "**/*.md"
   yaml-lint:
     name: yaml-lint
     runs-on: ubuntu-latest

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+- Use official markdownlint github action
+
 ## v2.0.1
 
 - Fix mypy errors