typo: atribute -> attribute

examples/disclosure/disclosure-img-long-description.html

@@ -241,7 +241,7 @@ <h3 id="id_data_label">Data for Charles Minard's Chart of Napoleon's Invasion of
   <section>
     <h2>Accessibility Features</h2>
     <ol>
-    <li> The visual indication of expanded and collapsed states is synchronized with the value of <code>aria-expanded</code> using a CSS atribute selector and <code>:before</code> pseudo element that generates an image with the <code>content</code> property.</li>
+    <li> The visual indication of expanded and collapsed states is synchronized with the value of <code>aria-expanded</code> using a CSS attribute selector and <code>:before</code> pseudo element that generates an image with the <code>content</code> property.</li>
       <li>The interactivity of the disclosure button is visually indicated on focus and hover:
         <ul>
           <li>The CSS <code>:focus</code> pseudo class is used to change the background and border colors.</li>