Change Hostname per documentation recommendations (#11714)

Author: johngallardo

specification/digitaltwins/data-plane/Microsoft.DigitalTwins/stable/2020-10-31/digitaltwins.json

@@ -5,7 +5,7 @@
     "title": "Azure Digital Twins API",
     "description": "A service for managing and querying digital twins and digital twin models."
   },
-  "host": "digitaltwins-name.digitaltwins.azure.net",
+  "host": "digitaltwins-hostname",
   "schemes": [
     "https"
   ],