Fix typo in comment for react-devtools-shared (#20459)

Author: mattfwood

packages/react-devtools-shared/src/backend/views/Highlighter/index.js

@@ -15,7 +15,7 @@ import {hideOverlay, showOverlay} from './Highlighter';
 import type {BackendBridge} from 'react-devtools-shared/src/bridge';
 
 // This plug-in provides in-page highlighting of the selected element.
-// It is used by the browser extension nad the standalone DevTools shell (when connected to a browser).
+// It is used by the browser extension and the standalone DevTools shell (when connected to a browser).
 // It is not currently the mechanism used to highlight React Native views.
 // That is done by the React Native Inspector component.