update the linehaul link to point to new repo (pypa#1119)

Author: onerandomusername

source/guides/analyzing-pypi-package-downloads.rst

@@ -42,7 +42,7 @@ limited resources.
 Public dataset
 ==============
 
-As an alternative, the `Linehaul project <https://github.com/pypa/linehaul>`__
+As an alternative, the `Linehaul project <https://github.com/pypa/linehaul-cloud-function/>`__
 streams download logs from PyPI to `Google BigQuery`_ [#]_, where they are
 stored as a public dataset.