Initially reported by Erwan Granger in this GDoc.

1.  In "Options for notebook server environments", update the "container size" description to include descriptions of "request" (guarantees an amount of CPU or memory is available to your container) and "limit" (prevents your container from using too many resources).
2. In the Troubleshooting section, remove the warning about deleting the jupyterhub-db-x pod, as this pod no longer exists in this context. (WARNING: Ensure that you delete the correct pod. Do not delete the jupyterhub-db-* pod by mistake.)