fix: add rightclick to main index page (#313)

Author: jennifer-shehane

app/index.html

@@ -123,6 +123,7 @@ <h2>Commands</h2>
               <li><a href="/commands/actions">submit</a></li>
               <li><a href="/commands/actions">click</a></li>
               <li><a href="/commands/actions">dblclick</a></li>
+              <li><a href="/commands/actions">rightclick</a></li>
               <li><a href="/commands/actions">check</a></li>
               <li><a href="/commands/actions">uncheck</a></li>
               <li><a href="/commands/actions">select</a></li>