Make some editorial revisions to the introduction and remove fieldset…

… from the example usage option since there is only one option control. Removing the fieldset makes the example consistent with disclosure-navigation-hybrid.html, which is another example with only one usage option control.

content/patterns/feed/examples/feed.html

@@ -34,26 +34,21 @@ <h2>About This Example</h2>
         <p>
           The example below implements the <a href="../feed-pattern.html">Feed Pattern</a> for a restaurant review site.
           To imitate an infinitely scrolling set of data, information about ten restaurants is repeatedly loaded as the user reads the feed.
-          Outside of the feed, an article load time selector is available for simulating data fetch delays.
+          This example includes an article load time selector that simulates data fetch delays.
         </p>
-        <p>Unlike other examples in the WAI-ARIA Authoring Practices, the example experience has its own page separate from this documentation page.</p>
       </section>
 
       <section>
-        <h2>Example Options</h2>
-
-        <fieldset class="feed-options">
-          <legend>Feed Options</legend>
-
-          <select id="delay-time-select" name="delay_time" aria-describedby="feed-controls-desc">
-            <option value="200">200 ms</option>
-            <option value="400">400 ms</option>
-          </select>
-          <label for="delay-time-select"> Loading delay</label>
-
-          <p id="feed-controls-desc">This option determines the article loading delay time in this feed example.</p>
-
-        </fieldset>
+        <h2>Example Usage Option</h2>
+        <p id="feed-controls-desc">
+          The article loading delay time enables simulation of scenarios where data fetches occasionally introduce significant latency.
+          This type of latency can impact assistive technology behavior when using assistive technology functions for navigating by article.
+        </p>
+        <select id="delay-time-select" name="delay_time" aria-describedby="feed-controls-desc">
+          <option value="200">200 ms</option>
+          <option value="400">400 ms</option>
+        </select>
+        <label for="delay-time-select"> Loading delay</label>
       </section>
 
       <section>