NET-515 small typo fix for error strings should not be capitalized

controllers/network.go

@@ -246,7 +246,7 @@ func createNetwork(w http.ResponseWriter, r *http.Request) {
 	}
 
 	if len(network.NetID) > 32 {
-		err := errors.New("Network name shouldn't exceed 32 characters")
+		err := errors.New("network name shouldn't exceed 32 characters")
 		logger.Log(0, r.Header.Get("user"), "failed to create network: ",
 			err.Error())
 		logic.ReturnErrorResponse(w, r, logic.FormatError(err, "badrequest"))