Add instructions for release managers to uncomment commented out release history
diff --git a/site/_docs/howto.md b/site/_docs/howto.md
index ad2b91e..3e4fec8 100644
--- a/site/_docs/howto.md
+++ b/site/_docs/howto.md
@@ -204,10 +204,10 @@
* Check that `site/_docs/howto.md` has the correct Gradle version.
* Check that `NOTICE` has the current copyright year.
* Check that `calcite.avatica.version` has the proper value in `/gradle.properties`.
-* Add release notes to `site/_docs/history.md`. Include the commit history,
- names of people who contributed to the release,
- and say which versions of Java, Guava and operating systems the release is
- tested against.
+* Add release notes to `site/_docs/history.md`. If release notes already exist for the version to be released, but
+ are commented out, remove the comments (`{% comment %}` and `{% endcomment %}`). Include the commit history,
+ names of people who contributed to the release, and say which versions of Java, Guava and operating systems the
+ release is tested against.
* Generate a report of vulnerabilities that occur among dependencies,
using `./gradlew dependencyCheckUpdate dependencyCheckAggregate`.
* Make sure that
