[DOCS] clarify that the repo location setting accepts only one value (#108267)

docs/reference/snapshot-restore/repository-shared-file-system.asciidoc

@@ -33,7 +33,8 @@ in snapshots. Data files are not compressed. Defaults to `true`.
 (Required, string)
 Location of the shared filesystem used to store and retrieve snapshots. This
 location must be registered in the `path.repo` setting on all master and data
-nodes in the cluster.
+nodes in the cluster. 
+Unlike `path.repo`, this setting supports only a single file path.
 
 `max_number_of_snapshots`::
 (Optional, integer)