feat: Update v4 release readme

Author: HazAT

HOW TO RELEASE v4.md

@@ -2,6 +2,8 @@
 
 `yarn lerna version --exact --no-git-tag-version --no-push --include-merged-tags VERSION`
 
-2. Publish it with `craft` by specifying a rev
+3. Push all the changes you want to publish to `4.x`
+
+4. Publish it with `craft` by specifying a rev
 
 `craft publish VERSION --rev REV`