Fix the titles of Azure Stack HCI examples (Azure#11853)

Author: mbialecka

specification/azurestackhci/resource-manager/Microsoft.AzureStackHCI/stable/2020-10-01/azurestackhci.json

@@ -69,7 +69,7 @@
         ],
         "operationId": "Clusters_ListBySubscription",
         "x-ms-examples": {
-          "ListClusters": {
+          "List clusters in a given subscription": {
             "$ref": "./examples/ListClustersBySubscription.json"
           }
         },
@@ -108,7 +108,7 @@
         ],
         "operationId": "Clusters_ListByResourceGroup",
         "x-ms-examples": {
-          "ListClusters": {
+          "List clusters in a given resource group": {
             "$ref": "./examples/ListClustersByResourceGroup.json"
           }
         },
@@ -150,7 +150,7 @@
         ],
         "operationId": "Clusters_Get",
         "x-ms-examples": {
-          "GetClusters": {
+          "Get cluster": {
             "$ref": "./examples/GetCluster.json"
           }
         },
@@ -190,7 +190,7 @@
         ],
         "operationId": "Clusters_Create",
         "x-ms-examples": {
-          "GetClusters": {
+          "Create cluster": {
             "$ref": "./examples/CreateCluster.json"
           }
         },
@@ -239,7 +239,7 @@
         ],
         "operationId": "Clusters_Update",
         "x-ms-examples": {
-          "GetClusters": {
+          "Update cluster": {
             "$ref": "./examples/UpdateCluster.json"
           }
         },
@@ -288,7 +288,7 @@
         ],
         "operationId": "Clusters_Delete",
         "x-ms-examples": {
-          "GetClusters": {
+          "Delete cluster": {
             "$ref": "./examples/DeleteCluster.json"
           }
         },