toc update

Author: cjgronlund

articles/open-datasets/toc.yml

@@ -38,7 +38,7 @@
   - name: Pricing
     href: https://azure.microsoft.com/pricing/details/open-datasets/
   - name: Regional availability
-    href: https://azure.microsoft.com/regions/services/
+    href: https://azure.microsoft.com/en-us/global-infrastructure/services/?products=open-datasets&regions=non-regional
   - name: User forum
     href: https://aka.ms/open-datasets-forum
   - name: Stack Overflow