fix unexpected empty string

Author: taooceros

Plugins/Flow.Launcher.Plugin.Explorer/Search/ResultManager.cs

@@ -44,7 +44,7 @@ internal static Result CreateFolderResult(string title, string subtitle, string
                     // one of it is enabled
                     var keyword = Settings.EnabledSearchActionKeyword ? Settings.SearchActionKeyword : Settings.PathSearchActionKeyword;
 
-                    keyword = keyword == Query.GlobalPluginWildcardSign ? string.Empty : keyword + "";
+                    keyword = keyword == Query.GlobalPluginWildcardSign ? string.Empty : keyword + " ";
 
                     string changeTo = path.EndsWith(Constants.DirectorySeperator) ? path : path + Constants.DirectorySeperator;
                     Context.API.ChangeQuery($"{keyword}{changeTo}");