fix toString issue (regression)

src/ui/content/content-ui-editor-web.js

@@ -2410,7 +2410,7 @@ pre code {
 		} else if (chrome && chrome.dom && chrome.dom.openOrClosedShadowRoot) {
 			try {
 				return chrome.dom.openOrClosedShadowRoot(element);
-				// eslint-disable-next-line no-unused-vars
+				/* eslint-disable-next-line no-unused-vars */
 			} catch (error) {
 				return element.shadowRoot;
 			}