Add an example to the online backup with lists of database names (#1507) (#1527)

Cherry-picked from #1507

Author: renetapopova

modules/ROOT/pages/backup-restore/online-backup.adoc

@@ -351,7 +351,7 @@ bin/neo4j-admin database backup --type=full --to-path=/path/to/backups/neo4j neo
 ----
 ====
 
-.Use `neo4j-admin database backup` to back up multiple databases.
+.Use `neo4j-admin database backup` to back up multiple databases
 ====
 To back up several databases that match database a pattern you can use name globbing.
 For example, to backup all databases that start with *n* from your three-node cluster, run:
@@ -360,4 +360,14 @@ For example, to backup all databases that start with *n* from your three-node cl
 ----
 bin/neo4j-admin database backup --from=192.168.1.34:6362,192.168.1.35:6362,192.168.1.36:6362 --to-path=/mnt/backups/neo4j --pagecache=4G "n*"
 ----
+====
+
+.Use `neo4j-admin database backup` to back up a list of databases
+====
+To back up several databases by name, you can provide a list of database names.
+
+[source, shell,role=nocopy noplay]
+----
+neo4j-admin database backup --from=192.168.1.34:6362,192.168.1.35:6362,192.168.1.36:6362 --to-path=/mnt/backups/neo4j --pagecache=4G "test*" "neo4j"
+----
 ====