message: Make copy-pasting release initiation easier
  Multi-line commands usually don't work well when copying them into the
  terminal, so switch to just oneline.
diff: @@ -128,8 +128,7 @@ Decide on a time to do the release, T.
  * **T-30m** - This is on rust-central-station:
  ```
  - docker exec -d -it rcs bash -c \
  - 'promote-release /tmp/stable stable /data/secrets.toml 2>&1 | logger --tag release-stable-realz'
  + docker exec -d -it rcs bash -c 'promote-release /tmp/stable stable /data/secrets.toml 2>&1 | logger --tag release-stable-realz'
  ```
  That'll, in the background, schedule the `promote-release` binary to run on the
  