doc/cephadm/services: Update monitoring.rst to add additional templates
The current documentation lacks a lot of other available templates as
the source code here:
https://github.com/ceph/ceph/tree/main/src/pybind/mgr/cephadm/templates/services
v2 - This updated commit fixes the j2 extensions I left in the previous one wrongly.
v3 - This updated commit changes the title as per PR's comment
orientation