Update README's 'file an issue' link to current repo's issue url

Author: Jack Hamilton

README.rst

@@ -90,7 +90,7 @@ If you encounter any problems, please `file an issue`_ along with a detailed
 description.
 
 .. _`MIT`: http://opensource.org/licenses/MIT
-.. _`file an issue`: https://github.com/ssbarnea/pytest-molecule/issues
+.. _`file an issue`: https://github.com/pycontribs/pytest-molecule/issues
 .. _`pytest`: https://github.com/pytest-dev/pytest
 .. _`tox`: https://tox.readthedocs.io/en/latest/
 .. _`pip`: https://pypi.org/project/pip/