Update topology.graphqls

topology.graphqls

@@ -88,7 +88,7 @@ extend type Query {
     getServiceTopology(serviceId: ID!, duration: Duration!): Topology
     # Query the topology, based on the given services.
     # `#getServiceTopology` could be replaced by this.
-    getServiceTopologys(serviceIds: [ID!]!, duration: Duration!): Topology
+    getServicesTopology(serviceIds: [ID!]!, duration: Duration!): Topology
     # Query the instance topology, based on the given clientServiceId and serverServiceId
     getServiceInstanceTopology(clientServiceId: ID!, serverServiceId: ID!, duration: Duration!): ServiceInstanceTopology
     # Query the topology, based on the given endpoint