Update devices.py (#237)

Author: annie-payseur

src/code42cli/cmds/devices.py

@@ -25,7 +25,7 @@
 @click.group(cls=OrderedGroup)
 @sdk_options(hidden=True)
 def devices(state):
-    """For managing devices within your Code42 environment."""
+    """Manage devices within your Code42 environment."""
     pass