docs: Fix generated names for ACL objects

docs: Fix generated names for ACL objects

Both the object name and permission name in ACL use '-' instead of '_'
separator when referring to them in the docs or even when used inside of
polkit. Unfortunately the generators used for generating our docs don't
honour this in certain cases which would result in broken names in the
API docs (once they will be generated).

Rename both object and permission name to use dash and reflect that in
the anchor names in the documentation.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>