[PATCH pve-docs] cluster: fix reference to faq section

[Hannes Laimer <h.laimer@proxmox.com>]

Since `scan-adoc-refs` only registers explicit refs, we can't use
an auto-id to reference something.

Fixes: 7780a53b ("pvecm: add notes about needing to remove QDevice when removing a node")
Signed-off-by: Hannes Laimer <h.laimer@proxmox.com>
---
 pvecm.adoc | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/pvecm.adoc b/pvecm.adoc
index 79f98b3..cbeffa1 100644
--- a/pvecm.adoc
+++ b/pvecm.adoc
@@ -325,7 +325,7 @@ steps that mention it.
 
 NOTE: If your configuration contains a QDevice, you will need to remove it
 before removing the cluster node, as outlined in the FAQ
-xref:_adding_deleting_nodes_after_qdevice_setup[here].
+xref:adding_deleting_nodes_after_qdevice_setup[here].
 
 Prerequisites
 ~~~~~~~~~~~~~
@@ -492,7 +492,7 @@ node from the cluster.
 
 NOTE: If your configuration contains a QDevice, you will need to remove it
 before removing the cluster node, as outlined in the FAQ
-xref:_adding_deleting_nodes_after_qdevice_setup[here].
+xref:adding_deleting_nodes_after_qdevice_setup[here].
 
 WARNING: Ensure that all shared resources are cleanly separated! Otherwise you
 will run into conflicts and problems.
@@ -1283,6 +1283,7 @@ For clusters with an even node count, there are no negative implications when
 using a QDevice. If it fails to work, it is the same as not having a QDevice
 at all.
 
+[[adding_deleting_nodes_after_qdevice_setup]]
 Adding/Deleting Nodes After QDevice Setup
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-- 
2.47.3