docs: address Copilot review wording (PR #18)

Author: johanrd

lib/rules/template-mouse-events-have-key-events.js

@@ -50,7 +50,7 @@ module.exports = {
     type: 'problem',
     docs: {
       description:
-        'require mouseover/mouseout to be accompanied by focus/blur for keyboard-only users',
+        'require mouseover/mouseout to be accompanied by focus/blur (or focusin/focusout) for keyboard-only users',
       category: 'Accessibility',
       url: 'https://github.com/ember-cli/eslint-plugin-ember/tree/master/docs/rules/template-mouse-events-have-key-events.md',
       templateMode: 'both',