Remove extra space from graphql enum

Remove extra space from end of description of
operations value in DomainFilterEnum.

app/graphql/types/alert_management/domain_filter_enum.rb

@@ -6,7 +6,7 @@ module Types
       graphql_name 'AlertManagementDomainFilter'
       description  'Filters the alerts based on given domain'
 
-      value 'operations', description: 'Alerts for operations domain '
+      value 'operations', description: 'Alerts for operations domain'
       value 'threat_monitoring', description: 'Alerts for threat monitoring domain'
     end
   end

doc/api/graphql/reference/gitlab_schema.json

@@ -1500,7 +1500,7 @@
           "enumValues": [
             {
               "name": "operations",
-              "description": "Alerts for operations domain ",
+              "description": "Alerts for operations domain",
               "isDeprecated": false,
               "deprecationReason": null
             },