Back porting changeset db302b88fdb6 to 3.4 branch, which fixed multiple documentation typos.

Related Issues:

#issue21528
#issue24453
diff --git a/Doc/distutils/builtdist.rst b/Doc/distutils/builtdist.rst
index ac96c40..c5827b6 100644
--- a/Doc/distutils/builtdist.rst
+++ b/Doc/distutils/builtdist.rst
@@ -355,7 +355,7 @@
 would create a 64bit installation executable on your 32bit version of Windows.
 
 To cross-compile, you must download the Python source code and cross-compile
-Python itself for the platform you are targetting - it is not possible from a
+Python itself for the platform you are targeting - it is not possible from a
 binary installation of Python (as the .lib etc file for other platforms are
 not included.)  In practice, this means the user of a 32 bit operating
 system will need to use Visual Studio 2008 to open the