STY: Add missing semicolon

src/core/js/ext_editmode_wysiwyg_text.js

@@ -65,7 +65,7 @@ var ext_editmode_wysiwyg_text = function ($, logger, ClassicEditor, edit_mode, g
             // Manually implement saving the data since edit mode is not
             // a form to be submitted.
             _callOnSave.push(() => {
-                editor.updateSourceElement()
+                editor.updateSourceElement();
             });
         } catch (error) {
             logger.error(error.stack);