QmlDesigner: Update image in the Previewing Android Applications document

This patch updates the old image to include lock the views features
in the document screenshot. The image was updated from Png to Webp.

Fixes: QDS-11566
Change-Id: I28fc637a3fe78a8e82b6fb3474b1edb49a31c1ee
Reviewed-by: Qt CI Patch Build Bot <ci_patchbuild_bot@qt.io>
Reviewed-by: Mats Honkamaa <mats.honkamaa@qt.io>

doc/qtdesignstudio/src/prototyping/qtquick-live-preview-android.qdoc

@@ -162,7 +162,7 @@
 
     Now the emulator runs, the qtdesignviewer APK delivered with the \QDS installation
     is uploaded, and the project is uploaded and shown in the emulator.
-    \image qtds-running-emulator.png
+    \image qtds-running-emulator.webp
 
     Note the following:
     \list