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 <[e-mail]>
Signed-off-by: Paul E. McKenney <[e-mail]>
Reviewed-by: Randy Dunlap <[e-mail]>

Documentation/RCU/torture.rst

···
 The kvm.sh ``--dryrun scenarios`` argument is useful for working out
 how many scenarios may be run in one batch across a group of systems.
 
-You can also re-run a previous remote run in a manner similar to kvm.sh:
+You can also re-run a previous remote run in a manner similar to kvm.sh::
 
 	kvm-remote.sh "system0 system1 system2 system3 system4 system5" \
 		tools/testing/selftests/rcutorture/res/2022.11.03-11.26.28-remote \