docs: Correct heading level
Fix the heading level in the release README.
@@ -13,7 +13,8 @@ For more information on using the script, run the following:
$ ./update-repository-version.sh -h
```
-### Update Kata projects to a new version
+## Update Kata projects to a new version
+
Kata Containers is divided into multiple projects. With each release, all
project versions are updated to keep the version consistent.
