Missing period.

Author: ericwbailey

index.html

@@ -873,7 +873,7 @@ <h1 id="title__forms">Forms</h1>
             </span>
 
             <p>
-                <small>Note: Use <code>tabindex="0"</code> in conjunction with <code>role="button"</code> to ensure that the text button is focusable. Learn more about <a rel="external" href="https://css-tricks.com/use-button-element/"><cite>When To Use The Button Element</cite></a></small>
+                <small>Note: Use <code>tabindex="0"</code> in conjunction with <code>role="button"</code> to ensure that the text button is focusable. Learn more about <a rel="external" href="https://css-tricks.com/use-button-element/"><cite>When To Use The Button Element</cite></a>.</small>
             </p>
 
         </fieldset><!-- End of #subsection__buttons -->