Documentation: RCU: Wrap kvm-remote.sh rerun snippet in literal code block

Documentation: RCU: Wrap kvm-remote.sh rerun snippet in literal code block

Unlike other kvm*.sh snippets in RCU torture test documentation,
kvm-remote.sh rerun snippet isn't formatted as literal code block,
causing it to be definition list instead in htmldocs output.

Wrap it like the rest.

Fixes: 0c208a793022 ("doc: Update torture.rst")
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>