update PR template

Signed-off-by: Andres Taylor <andres@planetscale.com>

.github/pull_request_template.md

@@ -10,23 +10,19 @@
 <!-- A few sentences describing the overall goals of the pull request's commits. -->
 
 ## Related Issue(s)
-<!-- List related issues and pull requests: -->
+<!-- List related issues and pull requests. If this PR fixes an issue, please add it using Fixes #????  -->
 
-- 
 
 ## Checklist
-- [ ] Should this PR be backported?
 - [ ] Tests were added or are not required
 - [ ] Documentation was added or is not required
 
 ## Deployment Notes
 <!-- Notes regarding deployment of the contained body of work. These should note any db migrations, etc. -->
 
-## Impacted Areas in Vitess
-Components that this PR will affect:
+<!-- Labeling PRs
 
-- [ ]  Query Serving
-- [ ]  VReplication
-- [ ]  Cluster Management
-- [ ]  Build/CI
-- [ ]  VTAdmin
+For each PR, try to find one `Type:` label and one `Component:` label. 
+This will help in finding a reviewer, and in creating release notes for the next release.
+
+-->