update instructions for maintaining cf-release branch (#281)

Author: dgrove-oss

docs/release_instructions.md

@@ -16,8 +16,10 @@ will:
    + create a [GitHub release](https://github.com/project-codeflare/appwrapper/releases) that contains the install.yaml
 
 4. To workaround back level go versions in ODH, we also maintain a
-   codeflare-releases branch.  After making a release, merge main into
-   the codeflare-releases branch and then tag it using a `cf` prefix
+   codeflare-releases branch.  After making a release, create a branch
+   from the codeflare-release branch, merge main into the branch and
+   then submit a PR against the codeflare-release branch.  After
+   CI passes, merge the PR and then tag the branch using a `cf` prefix
    instead of a `v`. (eg v0.21.2 ==> cf0.21.2).  After making this
    tag, you can update the codeflare-operator, using the vX.Y.Z tag in
    the Makefile and the cfX.Y.Z in the replace clause in codeflare's