made it defaults that can be overwritten

javascript/src/Helper/tinyMCE.js

@@ -148,12 +148,12 @@ QfqNS.Helper = QfqNS.Helper || {};
                     });
                 };
 
-                var relativeUrl = {
+                var defaults = {
                     relative_urls : false,
                     remove_script_host : false,
                 };
 
-                var tinyConfig = Object.assign(config, relativeUrl);
+                var tinyConfig = Object.assign(defaults, config);
 
                 tinymce.init(tinyConfig);
                 if($(this).is('[disabled]')) {