Update refresh.py

fixed typo

Author: allmightyspiff

SoftLayer/CLI/block/refresh.py

@@ -11,10 +11,7 @@
 @click.argument('snapshot_id')
 @environment.pass_env
 def cli(env, volume_id, snapshot_id):
-    """Refresh a duplicate volume with a snapshot from its parent.
-
-
-    """
+    """Refresh a duplicate volume with a snapshot from its parent."""
     block_manager = SoftLayer.BlockStorageManager(env.client)
     resp = block_manager.refresh_dupe(volume_id, snapshot_id)