Chore: Update description for get_subscriptions method (#27)

* Update description for get_subscriptions method

* Apply suggestions from code review

Co-authored-by: Matt Kufchak <matt.kufchak@gmail.com>

---------

Co-authored-by: Chris Bell <cjbell1988@gmail.com>
Co-authored-by: Matt Kufchak <matt.kufchak@gmail.com>

Author: 3 people

knockapi/resources/objects.py

@@ -454,8 +454,8 @@ def list_subscriptions(self, collection, id, options={}):
 
     def get_subscriptions(self, collection, id, options={}):
         """
-        Returns subscriptions for an object as a recipient
-
+        Returns all of the active subscriptions for which the specified object is a recipient
+        
         Args:
             collection (str): The collection the object belongs to
             id (str): The id of the object