[uk] Add seccomp tutorial to index

Author: Arhell

content/uk/docs/tutorials/_index.md

@@ -63,6 +63,8 @@ Before walking through each tutorial, you may want to bookmark the
 
 * [AppArmor](/docs/tutorials/clusters/apparmor/)
 
+* [seccomp](/docs/tutorials/clusters/seccomp/)
+
 ## Сервіси
 
 * [Використання Source IP](/docs/tutorials/services/source-ip/)