Update ci.md

Author: Oren Cohen

docs/reference/contributing/guidelines/ci.md

@@ -22,6 +22,9 @@ Travis configuration is located in the [.travis.yml](https://github.com/ARMmbed/
 - **travis-ci/littlefs** - Test littlefs without embedded hardware.
 - **travis-ci/tools-py2.7** - Run Python tools tests with Python 2.7.
 - **travis-ci/psa-autogen** - Runs PSA SPM code generator.
+   - Asserts that all PSA manifests in the tree are in correct form.
+   - Asserts that there are no chnages needed to be made.
+
 ### Jenkins
 
 We use [Jenkins](https://jenkins.io/) as an internal testing and checking environment. We execute tests that have special requirements for the execution enviroment in our internal Jenkins. In most cases, we publish test logs.