docs: update caption for action bar figure to match new screenshot

}

</pre>

<div class="figure" style="width:500px">

<img src="{@docRoot}images/ui/actionbar.png" height="34" alt="" />

<p class="img-caption"><strong>Figure 2.</strong> Screenshot of the Action Bar in the Email

application, with two action items from the Options Menu, plus the overflow menu.</p>

<div class="figure" style="width:450px">

<img src="{@docRoot}images/ui/actionbar.png" alt="" />

<p class="img-caption"><strong>Figure 2.</strong> Action bar from the <a

href="{@docRoot}resources/samples/HoneycombGallery/index.html">Honeycomb Gallery</a> app, including

navigation tabs and a camera action item (plus the overflow menu button).</p>

</div>

<p>You can also populate the menu in code, using {@link android.view.Menu#add(int,int,int,int)