to capital mark down settings

resource/locales/en-US/translation.json

@@ -93,7 +93,7 @@
   "Wiki Management Home Page": "Wiki Management Home Page",
   "App Settings": "App Settings",
   "Site URL settings": "Site URL settings",
-  "Markdown Settings": "Markdown settings",
+  "Markdown Settings": "Markdown Settings",
   "Customize": "Customize",
   "Notification Settings": "Notification settings",
   "User_Management": "User management",