Typo Manger -> Manager

IPython/core/magic.py

@@ -311,7 +311,7 b' class MagicsManager(Configurable):'
 
     For example::
 
-        c.MagicsManger.lazy_magics = {
+        c.MagicsManager.lazy_magics = {
           "my_magic": "slow.to.import",
           "my_other_magic": "also.slow",
         }

docs/source/whatsnew/version7.rst

@@ -17,7 +17,7 b' The ability to configure magics to be lazily loaded has been added to IPython.'
 See the ``ipython --help-all`` section on ``MagicsManager.lazy_magic``.
 One can now use::
 
-    c.MagicsManger.lazy_magics = {
+    c.MagicsManager.lazy_magics = {
               "my_magic": "slow.to.import",
               "my_other_magic": "also.slow",
     }