fixes wrong metric name in documentation (#9828)

* fixes wrong metric name, see https://github.com/prometheus/prometheus/blob/main/discovery/openstack/hypervisor.go#L35

Signed-off-by: teuto.net Netzdienste GmbH <github@teuto.net>

* fixes parameter doc, sorted alphabetically

Signed-off-by: teuto.net Netzdienste GmbH <github@teuto.net>

docs/configuration/configuration.md

@@ -1023,8 +1023,8 @@ address defaults to the `host_ip` attribute of the hypervisor.
 The following meta labels are available on targets during [relabeling](#relabel_config):
 
 * `__meta_openstack_hypervisor_host_ip`: the hypervisor node's IP address.
+* `__meta_openstack_hypervisor_hostname`: the hypervisor node's name.
 * `__meta_openstack_hypervisor_id`: the hypervisor node's ID.
-* `__meta_openstack_hypervisor_name`: the hypervisor node's name.
 * `__meta_openstack_hypervisor_state`: the hypervisor node's state.
 * `__meta_openstack_hypervisor_status`: the hypervisor node's status.
 * `__meta_openstack_hypervisor_type`: the hypervisor node's type.