[MM-16751] golint model (#17896)

app/role.go

@@ -163,9 +163,9 @@ func (a *App) UpdateRole(role *model.Role) (*model.Role, *model.AppError) {
 	}
 
 	builtInChannelRoles := []string{
-		model.CHANNEL_GUEST_ROLE_ID,
-		model.CHANNEL_USER_ROLE_ID,
-		model.CHANNEL_ADMIN_ROLE_ID,
+		model.ChannelGuestRoleId,
+		model.ChannelUserRoleId,
+		model.ChannelAdminRoleId,
 	}
 
 	builtInRolesMinusChannelRoles := append(utils.RemoveStringsFromSlice(model.BuiltInSchemeManagedRoleIDs, builtInChannelRoles...), model.NewSystemRoleIDs...)
@@ -239,7 +239,7 @@ func (a *App) CheckRolesExist(roleNames []string) *model.AppError {
 }
 
 func (a *App) sendUpdatedRoleEvent(role *model.Role) {
-	message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_ROLE_UPDATED, "", "", "", nil)
+	message := model.NewWebSocketEvent(model.WebsocketEventRoleUpdated, "", "", "", nil)
 	message.Add("role", role.ToJson())
 
 	a.Srv().Go(func() {