Fix examples for keyvault default tag: package-preview-2021-11 (#18962)

Author: Alancere

specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2021-11-01-preview/examples/deletePrivateEndpointConnection.json

@@ -4,7 +4,7 @@
     "resourceGroupName": "sample-group",
     "vaultName": "sample-vault",
     "privateEndpointConnectionName": "sample-pec",
-    "api-version": "2018-02-14"
+    "api-version": "2021-11-01-preview"
   },
   "responses": {
     "200": {

specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2021-11-01-preview/examples/getPrivateEndpointConnection.json

@@ -4,7 +4,7 @@
     "resourceGroupName": "sample-group",
     "vaultName": "sample-vault",
     "privateEndpointConnectionName": "sample-pec",
-    "api-version": "2018-02-14"
+    "api-version": "2021-11-01-preview"
   },
   "responses": {
     "200": {

specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2021-11-01-preview/examples/listPrivateLinkResources.json

@@ -3,7 +3,7 @@
     "subscriptionId": "00000000-0000-0000-0000-000000000000",
     "resourceGroupName": "sample-group",
     "vaultName": "sample-vault",
-    "api-version": "2018-02-14"
+    "api-version": "2021-11-01-preview"
   },
   "responses": {
     "200": {

specification/keyvault/resource-manager/Microsoft.KeyVault/preview/2021-11-01-preview/examples/putPrivateEndpointConnection.json

@@ -4,7 +4,7 @@
     "resourceGroupName": "sample-group",
     "vaultName": "sample-vault",
     "privateEndpointConnectionName": "sample-pec",
-    "api-version": "2018-02-14",
+    "api-version": "2021-11-01-preview",
     "properties": {
       "etag": "",
       "properties": {