Update the doc on the generic plugin editor

include/working-with-ardour-built-plugin-editors.html

@@ -6,12 +6,13 @@
 </p>
 
 <figure class="right">
-  <img class="mini" style="width:400px;" src="/images/exemple-plugin.png" alt="A generic plugin Editor (A-Eq)">
+  <img class="mini" style="width:400px;" src="/images/example-plugin.png" alt="A generic plugin Editor (A-Eq)">
   <figcaption>
-    A generic plugin Editor (A-Eq)
+    A generic plugin editor (ACE Compressor)
     <ol>
       <li>Parameters</li>
       <li>Description</li>
+      <li>CPU Profile</li>
       <li>Analysis graph</li>
     </ol>
   </figcaption>
@@ -39,6 +40,21 @@
   <kbd class=mod3n></kbd><kbd class=mouse>Left</kbd>-clicking on it.
 </p>
 
+<h2>Description</h2>
+
+<p>
+  This is a rarely used section that displays the contents of the description
+  metadata of a plugin.
+</p>
+
+<h2>CPU Profile</h2>
+
+<p>
+  This section displays CPU time measurements for the currently opened plugin.
+  For more information, please see the documentation on the
+  <a href="/troubleshooting/plugin-dsp-load/">Plugin DSP Load window</a>.
+</p>
+
 <h2>Analysis Graph</h2>
 
 <p>