Remove readline mention, fit IPython typo.

IPython/terminal/interactiveshell.py

@@ -1,4 +1,4 b''
-"""IPython terminal interface using prompt_toolkit in place of readline"""
+"""IPython terminal interface using prompt_toolkit"""
 from __future__ import print_function
 
 import os

docs/source/whatsnew/version5.rst

@@ -40,7 +40,7 b' Replacement of readline in TerminalInteractiveShell and PDB'
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 IPython 5.0 now uses ``prompt_toolkit``. The
-``IPtyhon.terminal.interactiveshell.TerminalInteractiveShell`` now uses
+``IPython.terminal.interactiveshell.TerminalInteractiveShell`` now uses
 ``prompt_toolkit``. It is an almost complete rewrite, so many settings have
 thus changed or disappeared. The class keep the same name to avoid breaking
 user configuration for the options which names is unchanged.