Bump markdownlint from 0.21.1 to 0.22.0

Bumps [markdownlint](https://github.com/DavidAnson/markdownlint) from 0.21.1 to 0.22.0.
- [Release notes](https://github.com/DavidAnson/markdownlint/releases)
- [Commits](DavidAnson/markdownlint@v0.21.1...v0.22.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -198,7 +198,7 @@
     "jscpd": "^3.3.21",
     "jsdoc": "^3.6.6",
     "lint-staged": "^10.2.11",
-    "markdownlint": "^0.21.1",
+    "markdownlint": "^0.22.0",
     "moment-timezone": "^0.5.31",
     "multer": "^1.4.2",
     "nodemon": "^2.0.4",