Update docs/get-started/sign-up.md

Author: kimsauce

docs/get-started/sign-up.md

@@ -193,5 +193,5 @@ Whether you're new to Sumo Logic or evaluating its features, Kickstart Data prov
 
 * [Sumo Logic Quickstart](/docs/get-started/quickstart)
 * [Onboarding checklists](/docs/get-started/onboarding-checklists)
-* [Sumo Logic training and certifications](/docs/get-started/training-certification-faq)
+* [Free Sumo Logic Training and Certification](/docs/get-started/training-certification-faq)
 * [Sumo Logic terms and conditions](https://www.sumologic.com/support-terms)