doc/cephadm: edit troubleshooting.rst (1 of x)

doc/cephadm: edit troubleshooting.rst (1 of x)

Edit doc/cephadm/troubleshooting.rst. This commit and the PR of which it
is a part was raised in response to
https://github.com/ceph/ceph/pull/53976. The limits of reStructuredText
are particularly visible here in every instance of a BASH for-loop and
in every instance of a command stretched over multiple lines.

Co-authored-by: Anthony D'Atri <anthony.datri@gmail.com>
Signed-off-by: Zac Dover <zac.dover@proton.me>