Update dependency markdownlint to ~0.24.0

package.json

@@ -26,7 +26,7 @@
     "docsify-cli": "~4.4.0",
     "eslint": "~7.0.0",
     "eslint-plugin-markdown": "~1.0.2",
-    "markdownlint": "~0.20.3",
+    "markdownlint": "~0.24.0",
     "markdownlint-cli": "~0.23.1",
     "npm-run-all": "~4.1.5"
   }