Fixes screenshots for PermissionRequest sample

Change-Id: Iaf0d931eaa0990001b1dc2e72af69ad1f9887e0f
diff --git a/content/webview/PermissionRequest/template-params.xml b/content/webview/PermissionRequest/template-params.xml
index 0402270..6a11636 100644
--- a/content/webview/PermissionRequest/template-params.xml
+++ b/content/webview/PermissionRequest/template-params.xml
@@ -44,7 +44,8 @@
         <level>INTERMEDIATE</level>
         <icon>screenshots/icon_web.png</icon>
         <screenshots>
-            <img>screenshots/main.png</img>
+            <img>screenshots/image1.png</img>
+            <img>screenshots/image2.png</img>
         </screenshots>
         <api_refs>
             <android>android.webkit.PermissionRequest</android>