Fix a minor typo in a docstring.
treea448ecb550243258e8908c800b3c469cb577c4a5
drwxr-xr-x - Demo
drwxr-xr-x - Doc
drwxr-xr-x - Grammar
drwxr-xr-x - Include
-rw-r--r-- 13675 LICENSE
drwxr-xr-x - Lib
drwxr-xr-x - Mac
-rw-r--r-- 35174 Makefile.pre.in
drwxr-xr-x - Misc
drwxr-xr-x - Modules
drwxr-xr-x - Objects
drwxr-xr-x - PC
drwxr-xr-x - PCbuild
drwxr-xr-x - PCbuild8
drwxr-xr-x - Parser
drwxr-xr-x - Python
-rw-r--r-- 55321 README
drwxr-xr-x - RISCOS
drwxr-xr-x - Tools
-rwxr-xr-x 632941 configure
-rw-r--r-- 97908 configure.in
-rwxr-xr-x 7122 install-sh
-rw-r--r-- 27631 pyconfig.h.in
-rw-r--r-- 71297 setup.py