fix limit=1 on reverse geocodes when single type set

Author: mpothier

lib/index.js

@@ -692,7 +692,7 @@ MapboxGeocoder.prototype = {
 
       config = extend(config,
         this.options.version === 'v6' ? { longitude: coords[0], latitude: coords[1]} : { query: coords },
-        {limit: 1 }
+        !config.types || config.types.length !== 1 ? {limit: 1 } : {}
       );
     } break;
     case GEOCODE_REQUEST_TYPE.FORWARD: {