Fix ReST link markup in README

Author: ambv

README.rst

@@ -144,9 +144,9 @@ which can be found on PyPI.
 Questions?
 ----------
 
-Check out `the docs https://html5lib.readthedocs.io/en/latest/`_. Still
+Check out `the docs <https://html5lib.readthedocs.io/en/latest/>`_. Still
 need help? Go to our `GitHub Discussions
-https://github.com/html5lib/html5lib-python/discussions`_.
+<https://github.com/html5lib/html5lib-python/discussions>`_.
 
 You can also browse the archives of the `html5lib-discuss mailing list 
-https://www.mail-archive.com/[email protected]/`_.
+<https://www.mail-archive.com/[email protected]/>`_.