Remove unneeded trailing paren in link
The recent commit to
add a pre-commit config includes a link in the README to an install
location.  A minor issue with the link is that it contains a trailing
')' which breaks the anchor location.
@@ -253,7 +253,7 @@ Version control integration
---------------------------
Use `pre-commit <https://pre-commit.com/>`_. Once you `have it
-installed <https://pre-commit.com/#install)>`_, add this to the
+installed <https://pre-commit.com/#install>`_, add this to the
`.pre-commit-config.yaml` in your repository
(be sure to update `rev` to point to a real git tag/revision!)::
