Switching launcher icon for page fragment.

Change-Id: I8beee5eb3addf586b9b5906b8a1a9db81991ed9f
diff --git a/samples/SupportLeanbackShowcase/app/src/main/res/raw/launcher_cards.json b/samples/SupportLeanbackShowcase/app/src/main/res/raw/launcher_cards.json
index 0abf363..7508d97 100644
--- a/samples/SupportLeanbackShowcase/app/src/main/res/raw/launcher_cards.json
+++ b/samples/SupportLeanbackShowcase/app/src/main/res/raw/launcher_cards.json
@@ -13,7 +13,7 @@
         "id": 1,
         "type": "DEFAULT",
         "title": "Page/Row fragment Examples",
-        "localImageResource": "thumbnail_example_cards",
+        "localImageResource": "thumbnail_example_browse",
         "description": "Showcase usage of page/rows fragment"
       },
       {