Fix project homepage on PyPI (#127)

Author: AndrewEckart

setup.py

@@ -32,7 +32,7 @@
       author_email="gwatts@uw.edu",
       maintainer="Gordon Watts (IRIS-HEP/UW Seattle)",
       maintainer_email="gwatts@uw.edu",
-      url="https://github.com/iris-hep/func_adl_xAOD",
+      url="https://github.com/ssl-hep/ServiceX_frontend",
       license="TBD",
       python_requires='>=3.6',
       test_suite="tests",