Merge pull request #209254 from mcevoy-building7/toc-0825-0313

change about to what is

Author: 19BMG00

articles/healthcare-apis/iot/toc.yml

@@ -4,7 +4,7 @@ items:
 - name: Overview
   expanded: true
   items:
-  - name: About the MedTech service
+  - name: What is MedTech service?
     href: iot-connector-overview.md
 - name: Quickstarts
   expanded: true