editorial fixes (#449)

* editorial fixes

* Update index.html

* Update index.html

---------

Co-authored-by: Scott O'Hara <[email protected]>

Author: stevefaulkner

index.html

@@ -220,7 +220,7 @@ <h2>ARIA semantics that extend and diverge from HTML</h2>
         and using `aria-disabled=true` would communicate the hyperlink as being disabled to 
         assistive technologies, but would not actually disable the element. The most effective way 
         to both communicate and actually disable a hyperlink would be to remove the `href` from 
-        the [^a^] element, creating a placeholder. Then, use ARIA can be applied to this
+        the [^a^] element, creating a placeholder. Then, ARIA can be applied to this
         placeholder link to communicate the element's intended role and state.
       </p>
       <pre class="HTML example" title="Communicate a disabled link with ARIA">