chore(package): update markdownlint-cli to version 0.22.0

Author: greenkeeper[bot]

package.json

@@ -68,7 +68,7 @@
     "good-console": "^8.0.0",
     "good-squeeze": "5.1.0",
     "husky": "^4.0.2",
-    "markdownlint-cli": "^0.20.0",
+    "markdownlint-cli": "^0.22.0",
     "material-ui": "0.20.2",
     "mocha": "^7.0.1",
     "mustache": "^4.0.0",