Improve the release doc

Author: Philip de Nier

docs/release.md

@@ -13,7 +13,13 @@ This describes the steps for making a release.
 * Check the [runner versions](https://docs.github.com/en/actions/using-github-hosted-runners/using-github-hosted-runners/about-github-hosted-runners) (e.g. `windows-2019` and `macos-13`) in the [release.yml](../.github/workflows/release.yml) workflow file are still available
     * Select the oldest macOS version available to help with compatibility
 * Run the [Release](https://github.com/bbc/bmx/actions/workflows/release.yml) workflow in GitHub Actions using the release branch to check it succeeds
-    * Create a temporary tag using the steps from [Create a Release Tag](#create-a-release-tag) and then delete the tag once the workflow succeeds using the following commands:
+    * On the release branch, create a temporary tag and then delete the tag once the workflow succeeds:
+
+```bash
+export BMX_VERSION=<major version>.<minor version>
+git tag -a v${BMX_VERSION} -m "Version ${BMX_VERSION}"
+git push origin v${BMX_VERSION}
+```
 
 ```bash
 git push --delete origin v${BMX_VERSION}