mention staging environment

service-catalog/bors/README.md

@@ -4,7 +4,8 @@ The bors [module](https://github.com/rust-lang/simpleinfra/tree/master/terragrun
 contains the infrastructure of [bors](https://github.com/rust-lang/bors), the Rust rewrite of
 [homu](https://github.com/rust-lang/homu).
 
-`Homu` is deployed in the legacy account, while `bors` is deployed in the `bors-prod` account.
+`Homu` is deployed in the legacy account, while `bors` is deployed in the
+`bors-staging` and `bors-prod` account, depending on the environment.
 
 Bors is deployed as a [Fargate](https://aws.amazon.com/fargate/) service
 ([ECS](https://aws.amazon.com/ecs/)) in the `us-east-2` region.
@@ -17,7 +18,6 @@ pipeline:
 1. Pushes the Docker image to the [ECR](https://aws.amazon.com/ecr/) repository.
 2. Updates the ECS service, forcing a new deployment.
 
-
 ## Versions
 
 These are the versions we need to keep up-to-date:
@@ -29,7 +29,7 @@ These are the versions we need to keep up-to-date:
   [Cargo.toml](https://github.com/rust-lang/bors/blob/main/Cargo.toml)
 - PostgreSQL: version specified in
   [Terraform](https://github.com/rust-lang/simpleinfra/blob/master/terragrunt/modules/bors/main.tf)
-No automation is in place as of August 2024.
 
+No automation is in place as of August 2024.
 
 [Dockerfile]: https://github.com/rust-lang/bors/blob/main/Dockerfile