Remove locale from external URL

Author: ntrogh

articles/load-testing/toc.yml

@@ -96,7 +96,7 @@ items:
     - name: Pricing
       href: https://azure.microsoft.com/pricing/details/load-testing/
     - name: Regional availability
-      href: https://azure.microsoft.com/en-us/explore/global-infrastructure/products-by-region/?products=load-testing
+      href: https://azure.microsoft.com/explore/global-infrastructure/products-by-region/?products=load-testing
     - name: Supported Azure resource types
       href: resource-supported-azure-resource-types.md
     - name: Service limits