Cleaning up application categories.

Change-Id: Id3c937323123b6089cedf7b31cd01151f6aca8e1
diff --git a/apps/simplefabric/BUCK b/apps/simplefabric/BUCK
index b215c46..177b953 100644
--- a/apps/simplefabric/BUCK
+++ b/apps/simplefabric/BUCK
@@ -24,7 +24,7 @@
 
 onos_app (
   title = 'SimpleFabric',
-  category = 'Traffic Steering',
+  category = 'Traffic Engineering',
   url = 'http://onosproject.org',
   included_bundles = BUNDLES,
   description = 'Simple Fabric application',