Clean up extra spaces

Although these errors are not important, they affect the code specification.

Change-Id: I3ea4c248d660c71cab4c27f26ade7931d10613e3

samples/tasks/contexts/manila-share-networks.json

@@ -37,5 +37,5 @@
                 }
             }
         }
-    ]      
+    ]
 }