Correct the issue tracker URL

Author: AA-Turner

pyproject.toml

@@ -11,7 +11,7 @@ urls.Changelog = "https://alabaster.readthedocs.io/en/latest/changelog.html"
 urls.Documentation = "https://alabaster.readthedocs.io/"
 urls.Download = "https://pypi.org/project/alabaster/"
 urls.Homepage = "https://alabaster.readthedocs.io/"
-urls."Issue tracker" = "https://github.com/bitprophet/alabaster/issues"
+urls."Issue tracker" = "https://github.com/sphinx-doc/alabaster/issues"
 urls.Source = "https://github.com/sphinx-doc/alabaster"
 license.text = "BSD-3-Clause"
 requires-python = ">=3.9"