Update old images in Geo docs

doc/administration/geo/replication/object_storage.md

@@ -35,8 +35,8 @@ To enable GitLab replication, you must:
 
 1. Go to **Admin Area > Geo**.
 1. Press **Edit** on the **secondary** node.
-1. Enable the **Allow this secondary node to replicate content on Object Storage**
-   checkbox.
+1. In the **Synchronization Settings** section, find the **Allow this secondary node to replicate content on Object Storage**
+   checkbox to enable it.
 
 For LFS, follow the documentation to
 [set up LFS object storage](../../lfs/index.md#storing-lfs-objects-in-remote-object-storage).

doc/administration/geo/replication/troubleshooting.md

@@ -35,7 +35,7 @@ to help identify if something is wrong:
 - Is the node's secondary tracking database connected?
 - Is the node's secondary tracking database up-to-date?
 
-![Geo health check](img/geo_node_healthcheck.png)
+![Geo health check](img/geo_node_dashboard.png)
 
 For information on how to resolve common errors reported from the UI, see
 [Fixing Common Errors](#fixing-common-errors).