environment -> environments

pkg/environments/events.go

 package environments
 
 const (
-	EventCreate  = "environment.create"
-	EventUpdate  = "environment.update"
-	EventDelete  = "environment.delete"
-	EventMigrate = "environment.migrate"
+	EventCreate  = "environments.create"
+	EventUpdate  = "environments.update"
+	EventDelete  = "environments.delete"
+	EventMigrate = "environments.migrate"
 )