Fix typo

Author: Bryant Chandler

video_frame_metadata_registry.src.html

@@ -75,7 +75,7 @@
   </tr>
   <tr>
     <td>backgroundBlur</td>
-    <td>[Camera dffect status](https://github.com/markafoltz/camera-effects)</td>
+    <td>[Camera effect status](https://github.com/markafoltz/camera-effects)</td>
   </tr>
 </table>