chore: improve formatting of PR template

.github/PULL_REQUEST_TEMPLATE.md

@@ -4,25 +4,18 @@
 ### Pull Request Checklist
 
 * [ ] Testing
-
   - Unit test added
   - __CLI change?:__ manually run [integration tests](https://github.com/awslabs/aws-cdk/blob/master/packages/aws-cdk/integ-tests/test.sh) and paste output as a PR comment
-  - __CLI init template change?:__ coordinated update of integration tests with team
-
+  - __cdk-init template change?:__ coordinated update of integration tests with team
 * [ ] Docs
-
   - __jsdocs__: All public APIs documented
   - __README__: README and/or documentation topic updated
-
 * [ ] Title and Description
-
   - __Change type__: title prefixed with **fix**, **feat** will appear in changelog
   - __Title__: use lower-case and doesn't end with a period
   - __Breaking?__: last paragraph: "BREAKING CHANGE: <describe what changed + link for details>"
   - __Issues__: Indicate issues fixed via: "**Fixes #xxx**" or "**Closes #xxx**"
-
 * [ ] Sensitive Modules (requires 2 PR approvers)
-
   - IAM Policy Document (in @aws-cdk/aws-iam)
   - EC2 Security Groups and ACLs (in @aws-cdk/aws-ec2)
   - Grant APIs (only if not based on official documentation with a reference)