Update toc.yml

Updating toc title for space and consistency with other titles.

Author: KendalBond007

articles/healthcare-apis/toc.yml

@@ -20,7 +20,7 @@ items:
       href: ./azure-api-for-fhir/overview.md
     - name: Business continuity & disaster recovery
       href: business-continuity-disaster-recovery.md
-    - name: Regional availability of services and features
+    - name: Regional availability of services & features
       href: services-features-availability-zones.md
     - name: Availability zones
       href: availability-zones.md