Update URL in setup.py

setup.py

@@ -9,7 +9,7 @@ setup(name='pynsist',
       long_description=readme,
       author='Thomas Kluyver',
       author_email='thomas@kluyver.me.uk',
-      url='https://github.com/takluyver/pynsis',
+      url='https://github.com/takluyver/pynsist',
       packages=['nsist'],
       package_data={'nsist': ['template.nsi',
                               'python-pubkeys.txt',