clarify camera capabilities/quality

static/usage.html

@@ -486,6 +486,9 @@
             <section id="camera">
                 <h2><a href="#camera">Camera</a></h2>
 
+                <p>GrapheneOS itself has the same camera capabilities and quality as the stock OS.
+                It will match the stock OS when comparing the same app on each OS.</p>
+
                 <p>The Camera app included in GrapheneOS is very basic and can't take full advantage
                 of the hardware. It doesn't offer much in the way of configuration. In the long term,
                 it's going to be replaced. In the short term, there are other apps available providing