fix linter

Author: rezrah

packages/site/content/content-example/tabbed-component/react.mdx

@@ -130,7 +130,7 @@ You can place an icon inside the Button in either the leading or the trailing po
 
 ```jsx live
 <>
-  <img src="/images/avatar-mona.png" />
+  <img src="/images/avatar-mona.png" alt="Mona lisa" />
   <Avatar src="/images/avatar-mona.png" />
 </>
 ```