s/which/that/
Which is usually for descriptive clauses in technical writing, while
that is restrictive. Most of the time we are being being restrictive.
diff --git a/docs/doing-a-release.rst b/docs/doing-a-release.rst
index 194e82f..15583af 100644
--- a/docs/doing-a-release.rst
+++ b/docs/doing-a-release.rst
@@ -18,7 +18,7 @@
Performing the release
----------------------
-The commit which merged the version number bump is now the official release
+The commit that merged the version number bump is now the official release
commit for this release. You will need to have ``gpg`` installed and a ``gpg``
key in order to do a release. Once this has happened: