Fix linting errors

Author: dwettstein

pyvcloud/vcd/vm.py

@@ -743,7 +743,8 @@ def update_nic(self, network_name, nic_id=0,
 
         if nic_not_found:
             raise EntityNotFoundException(
-                'Nic with name \'%s\' and index \'%s\' is not found in the VM \'%s\'' %
+                'Nic with name '
+                '\'%s\' and index \'%s\' is not found in the VM \'%s\'' %
                 (network_name, nic_id, self.get_resource().get('name')))
 
         if is_primary: