docs: Fixed minor bug in downloads class. Bug: 16948533

<p>Alternatively, you can use the managed / secure application cache. Note that this internal cache may be flushed when the system is running low on available storage.</p>

<pre>Context.getCache();</pre>

<pre>Context.getCacheDir();</pre>

<p>Files stored in either cache location will be erased when the application is uninstalled.</p>