Minor fixes in singleton docs

docs/providers/singleton.rst

@@ -73,8 +73,7 @@ lifecycle of memorized instance is out of ``Singleton`` provider's control.
         """Example class UserService."""
 
 
-    # Singleton provider creates new instance of specified class on first call and
-    # returns same instance on every next call.
+    # Users service singleton provider:
     users_service_provider = Singleton(UserService)
 
     # Retrieving several UserService objects:

examples/providers/singleton_reseting.py

@@ -8,8 +8,7 @@ class UserService(object):
     """Example class UserService."""
 
 
-# Singleton provider creates new instance of specified class on first call and
-# returns same instance on every next call.
+# Users service singleton provider:
 users_service_provider = Singleton(UserService)
 
 # Retrieving several UserService objects: