Replace nodes with sites in the Geo troubleshooting section

doc/administration/geo/disaster_recovery/index.md

@@ -93,7 +93,7 @@ Note the following when promoting a secondary:
   the **secondary** to the **primary**.
 - If you encounter an `ActiveRecord::RecordInvalid: Validation failed: Name has already been taken`
   error message during this process, for more information, see this
-  [troubleshooting advice](../replication/troubleshooting.md#fixing-errors-during-a-failover-or-when-promoting-a-secondary-to-a-primary-node).
+  [troubleshooting advice](../replication/troubleshooting.md#fixing-errors-during-a-failover-or-when-promoting-a-secondary-to-a-primary-site).
 - If you run into errors when using `--force` or `--skip-preflight-checks` before 13.5 during this process,
   for more information, see this
   [troubleshooting advice](../replication/troubleshooting.md#errors-when-using---skip-preflight-checks-or---force).
@@ -774,4 +774,4 @@ If you are running GitLab 14.4 and earlier:
 
 ## Troubleshooting
 
-This section was moved to [another location](../replication/troubleshooting.md#fixing-errors-during-a-failover-or-when-promoting-a-secondary-to-a-primary-node).
+This section was moved to [another location](../replication/troubleshooting.md#fixing-errors-during-a-failover-or-when-promoting-a-secondary-to-a-primary-site).

doc/administration/geo/disaster_recovery/runbooks/planned_failover_multi_node.md

@@ -274,7 +274,7 @@ the **secondary** to the **primary**.
 
 WARNING:
 If you encounter an `ActiveRecord::RecordInvalid: Validation failed: Name has already been taken` error during this process, read
-[the troubleshooting advice](../../replication/troubleshooting.md#fixing-errors-during-a-failover-or-when-promoting-a-secondary-to-a-primary-node).
+[the troubleshooting advice](../../replication/troubleshooting.md#fixing-errors-during-a-failover-or-when-promoting-a-secondary-to-a-primary-site).
 
 The `gitlab-ctl promote-to-primary-node` command cannot be used yet in
 conjunction with multiple servers, as it can only

doc/administration/geo/disaster_recovery/runbooks/planned_failover_single_node.md

@@ -220,7 +220,7 @@ Note the following when promoting a secondary:
   the **secondary** to the **primary**.
 - If you encounter an `ActiveRecord::RecordInvalid: Validation failed: Name has already been taken`
   error during this process, read
-  [the troubleshooting advice](../../replication/troubleshooting.md#fixing-errors-during-a-failover-or-when-promoting-a-secondary-to-a-primary-node).
+  [the troubleshooting advice](../../replication/troubleshooting.md#fixing-errors-during-a-failover-or-when-promoting-a-secondary-to-a-primary-site).
 
 To promote the secondary site running GitLab 14.5 and later: