[ReleasePR billingbenefits] Minor fix on billingBeneifts (#2667)

Create to sync Azure/azure-rest-api-specs#21566
[ReCreate this PR](https://github.com/azure-resource-manager-schemas/compare/main...azure-sdk:sdkAuto/billingbenefits?expand=1)

Author: msftbot[bot]

schemas/2022-11-01/Microsoft.BillingBenefits.json

@@ -154,7 +154,7 @@
         },
         "tenantId": {
           "type": "string",
-          "description": "Tenant ID where the savings plan should apply benefit."
+          "description": "Tenant ID where the benefit is applied."
         }
       },
       "description": "Properties specific to applied scope type. Not required if not applicable."
@@ -237,7 +237,7 @@
         },
         "billingScopeId": {
           "type": "string",
-          "description": "Subscription that will be charged for purchasing SavingsPlan"
+          "description": "Subscription that will be charged for purchasing the benefit"
         },
         "displayName": {
           "type": "string",
@@ -265,7 +265,7 @@
               "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
             }
           ],
-          "description": "Setting this to true will automatically purchase a new savings plan on the expiration date time."
+          "description": "Setting this to true will automatically purchase a new benefit on the expiration date time."
         },
         "reservedResourceProperties": {
           "oneOf": [
@@ -283,7 +283,6 @@
             {
               "type": "string",
               "enum": [
-                "ComputeSavingsPlan",
                 "VirtualMachines",
                 "SqlDatabases",
                 "SuseLinux",
@@ -329,7 +328,8 @@
               "type": "string",
               "enum": [
                 "P1Y",
-                "P3Y"
+                "P3Y",
+                "P5Y"
               ]
             },
             {
@@ -404,7 +404,7 @@
         },
         "billingScopeId": {
           "type": "string",
-          "description": "Subscription that will be charged for purchasing SavingsPlan"
+          "description": "Subscription that will be charged for purchasing the benefit"
         },
         "commitment": {
           "oneOf": [
@@ -447,7 +447,8 @@
               "type": "string",
               "enum": [
                 "P1Y",
-                "P3Y"
+                "P3Y",
+                "P5Y"
               ]
             },
             {