Fix: code format

registry/zookeeper/registry.go

@@ -272,7 +272,7 @@ func (r *zkRegistry) register(c common.URL) error {
 	params = url.Values{}
 
 	c.RangeParams(func(key, value string) bool {
-		params[key] = []string{value}
+		params.Add(key, value)
 		return true
 	})