Docs: Fixes NDK-related code sample for N Preview Behavior Changes.

  </li>

  <li>Use of {@code property_get} symbol from {@code libcutils.so} can be

    replaced with the public {@code alternative __system_property_get}:

    replaced with the public {@code alternative __system_property_get}.

   To do this, use {@code __system_property_get} with the following include:

<pre>

#include <sys/system_properties.h> and use __system_property_get

#include <sys/system_properties.h>

</pre>

  </li>