Update parameter location (#15186)

Co-authored-by: shenshengkafei <[email protected]>

Author: diwudd

specification/resources/resource-manager/Microsoft.Features/stable/2021-07-01/SubscriptionFeatureRegistration.json

@@ -440,7 +440,7 @@
       "required": true,
       "type": "string",
       "description": "The provider namespace.",
-      "x-ms-parameter-location": "client"
+      "x-ms-parameter-location": "method"
     },
     "FeatureNameParameter": {
       "name": "featureName",