doc/rados: add prompts to pools.rst
This commit adds ".. prompt:: bash $"-style prompts to pools.rst.
This brings this file up to the standard established in 2020 when
Kefu added support for the ".. prompt::" directive.
This commit is a part of an initiative to modernize the presentation
of all BASH commands in the RADOS documentation.
The progress of this project can be tracked here:
https://tracker.ceph.com/issues/57108
Signed-off-by: Zac Dover <zac.dover@gmail.com>
(cherry picked from commit
1bd64192568242b141d8e30fef6758bf162ec350)