Update firebase_testlab.sh (#25816)

ci/firebase_testlab.sh

@@ -25,11 +25,11 @@ BUILD_ID="${3:-$SWARMING_TASK_ID}"
 # This type of test will give the application a handle to a file, and
 # we'll write the timeline JSON to that file.
 # See https://firebase.google.com/docs/test-lab/android/game-loop
+# Pixel 4. As of this commit, this is a highly available device in FTL.
 gcloud --project flutter-infra firebase test android run \
   --type game-loop \
   --app "$APP" \
   --timeout 2m \
   --results-bucket=gs://flutter_firebase_testlab \
   --results-dir="engine_scenario_test/$GIT_REVISION/$BUILD_ID" \
-  # Pixel 4. As of this commit, this is a highly available device in FTL.
-  --device model=flame,version=29
+  --device model=flame,version=29