Fix tox analysis.

Author: Fernando Ojeda

SoftLayer/managers/hardware.py

@@ -881,7 +881,7 @@ def _get_prices_for_upgrade_option(upgrade_prices, option, value):
         hardware server upgrade.
         :param string option: Describes type of parameter to be upgraded
 
-        :returns: A item price id.
+        :return: int.
         """
         price_id = None
         option_category = {