message: make the release schedule more accurate
diff: @@ -106,7 +106,7 @@ Send a PR to the master branch to:
  Decide on a time to do the release, T.
  -- **T-30m** - Run the following command in a shell with [AWS
  +- **T-50m** - Run the following command in a shell with [AWS
  credentials][awscli] in the [simpleinfra] repository:
  ```
  @@ -129,7 +129,7 @@ Decide on a time to do the release, T.
  After this [Update thanks.rust-lang.org][update-thanks] by triggering a build
  on GitHub Actions on the master branch.
  -- **T-5m** - Merge blog post.
  +- **T-2m** - Merge blog post.
  - **T** - Tweet and post everything!
  