Update pull_request_template.md

.github/pull_request_template.md

@@ -4,9 +4,11 @@ This section can be deleted after reading.
 We employ the following branching strategy to simplify the development process and to ensure that only stable code is pushed to the `master` branch:
 
 - `develop`: For unstable code: New features and bug fixes.
-- `alpha-x.x.x`: For stability testing: Only bug fixes accepted.
 - `master`: Where the stable production ready code lies. Only security related bugs.
 
+NOTE!!!
+
+ONLY SUBMIT PRS AGAINST OUR `DEVELOP` BRANCH. THE DEFAULT IS `MAIN`, SO YOU WILL HAVE TO MODIFY THIS BEFORE SUBMITTING YOUR PR FOR REVIEW. PRS MADE AGAINST `MAIN` WILL BE CLOSED.
 -->
 
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