Fix url

Author: vidartf

{{cookiecutter.github_project_name}}/setup.py

@@ -68,7 +68,7 @@
     packages        = find_packages(),
     author          = '{{ cookiecutter.author_name }}',
     author_email    = '{{ cookiecutter.author_email }}',
-    url             = 'https://github.com/{{ cookiecutter.github_organization_name }}/{{ cookiecutter.python_package_name }}',
+    url             = 'https://github.com/{{ cookiecutter.github_organization_name }}/{{ cookiecutter.github_project_name }}',
     license         = 'BSD',
     platforms       = "Linux, Mac OS X, Windows",
     keywords        = ['Jupyter', 'Widgets', 'IPython'],