Add another mixdrop domain regexp (#443)

servers/mixdrop.json

@@ -10,6 +10,10 @@
       {
         "pattern": "(mixdro?ps?.[^/]+/player\\.php\\?id=[a-z0-9-]+)",
         "url": "https://\\1"
+      },
+      {
+        "pattern": "(mdy[a-z0-9]*\\.[a-z0-9]+/(?:f|e)/[a-z0-9]+)",
+        "url": "https://\\1"
       }
     ]
   },