Ocf doc8 documentation of the helper service

• Swagger of the new helper service
• Fixed postman bugs
• Added link in "How to Run" for testing

doc/gettingstarted/howtorun.md

@@ -6,6 +6,7 @@
 - [Run All CAPIF Services locally with Docker images and deploy monitoring stack](#run-all-capif-services-locally-with-docker-images-and-deploy-monitoring-stack)
 - [Run each service using Docker](#run-each-service-using-docker)
 - [Run each service using Python](#run-each-service-using-python)
+- [Start Your Testing with OpenCAPIF](#start-your-testing-with-opencapif)
 
 Capif services are developed under [services folder](https://labs.etsi.org/rep/ocf/capif/-/tree/main/services).
 
@@ -158,4 +159,17 @@ Run using python
 cd <Service>
 pip3 install -r requirements.txt
 python3 -m <service>
-```
\ No newline at end of file
+```
+
+#### Start Your Testing with OpenCAPIF
+
+Related with OpenCAPIF Testing, the following sections help you to understand testing implemented and how to run it by yourself:
+
+- [Test Plan Directory]: Here you can find the complete test plan definition that are accomplish by all versions released of OpenCAPIF.
+- [Testing with Robot Framework]: At this section you can find all information about how to run the test suite implemented using Robot Framework.
+- [Testing with Postman]: Easy way to understand the complete basic OpenCAPIF flow, acting as invoker and provider.
+
+
+[Test Plan Directory]: .././testing/testplan/README.md  "Test Plan"
+[Testing with Robot Framework]: .././testing/robotframework/README.md  "Robot Framework"
+[Testing with Postman]: .././testing/postman/README.md  "Postman"