Update TOC

Author: MikeRayMSFT

articles/azure-arc/data/toc.yml

@@ -60,7 +60,7 @@ items:
             href: create-data-controller-direct-cli.md
         - name: Configure monitor certificates
           href: monitor-certificates.md
-        - name: Resource synchronization
+        - name: Resource sync
           href: resource-sync.md
     - name: Common experiences across Azure Arc-enabled data services
       items: