Update module docblocks

dependency_injector/containers.py

@@ -1,4 +1,4 @@
-"""IoC containers module."""
+"""Dependency injector IoC containers module."""
 
 import six
 

dependency_injector/errors.py

@@ -1,4 +1,4 @@
-"""Errors module."""
+"""Dependency injector errors module."""
 
 
 class Error(Exception):

dependency_injector/injections.py

@@ -1,4 +1,4 @@
-"""Injections module."""
+"""Dependency injector injections module."""
 
 import six
 

dependency_injector/utils.py

@@ -1,4 +1,4 @@
-"""Utils module."""
+"""Dependency injector utils module."""
 
 import sys
 import copy as _copy