Fix the quick link menu

object-storage/os-index.md

@@ -13,10 +13,13 @@ Object Storage Services is a portfolio of services allowing to facilitate your a
 
     ---
 
-    Do you need common **Object Storage Services**?
+    **S3 Service** is a general service suitable for most of the usecases (archives, backups, special applications...). It also allows to share your data with other users or publicly via link.
 
-    [:octicons-arrow-right-24: S3 Service](https://du.cesnet.cz/en/navody/object_storage/start)   
-    [:octicons-arrow-right-24: RBD Service](https://du.cesnet.cz/en/navody/sluzby/start)   
+    [:octicons-arrow-right-24: Overview of S3 Service](./os-index.md)   
+    [:octicons-arrow-right-24: Bucket Sharing](./rclone.md)   
+    [:octicons-arrow-right-24: Bucket Encryption](./rclone.md)   
+    [:octicons-arrow-right-24: Worm model](./rclone.md)   
+    [:octicons-arrow-right-24: Veeam setup against S3](./rclone.md)   
 <!---    
 [:octicons-arrow-right-24: Account properties and lifecycle](/account/properties)   
 --->