Update release instructions (#962)

* Fixed steps regarding workflow

* Remove unncessary comment

* Clarify steps'

.github/workflows/release.yml

@@ -46,7 +46,6 @@ jobs:
         tap: shopify/shopify
         formula: shopify-cli
         tag: ${{ steps.folder.outputs.name }}
-        message: "Version bump, created by github actions"
 
     - name: Create Release # https://hub.github.com/hub-release.1.html
       env:

RELEASING.md

@@ -31,19 +31,11 @@
 
 1. Deploy using Shipit
 
-1. Update your `master` branch to the latest version
-   ```
-   $ git checkout master
-   $ git pull
-   ```
+1. Check the "Actions" tab to see if the _Create Release_ workflow is successful. 
+   The workflow will automatically create a [release](https://github.com/Shopify/shopify-app-cli/releases) with the latest tag and `.deb`, `.rpm` assets attached.
 
-1. On local machine and _AFTER_ gem has been published to https://rubygems.org, run
-   ```
-   $ rake package
-   ```
-   This will generate the `.deb`, `.rpm` and brew formula files, which will be located in `packaging/builds/X.Y.Z/`.
+2. Check the `Shopify/homebrew-shopify` repository for new PR `shopify-cli {version}`
+   * rename PR to `Packaging for release of v{version} of shopify-cli`
+   * when PR is approved, merge into main branch
 
-1. Check the "Actions" tab to see if the _Create Release_ workflow is successful. 
-   The workflow will automatically create a release with the latest tag and the `.deb`, `.rpm` assets attached.
 
-1. Check the `Shopify/homebrew-shopify` repository for new branch `bump-shopify-cli-{version}` and create PR.