update docs

docs/sat.md

@@ -8,7 +8,7 @@ Manta extends SAT file features:
 
 ## SAT files cannot have configurations only
 
-Currently, the management plane does not track which cluster belongs to each configuration unless a node is booting using an image or a 
+Currently, the management plane does not track which cluster belongs to which configuration unless there is an `image` or a `session template` linked to it. The reason is `images` and `session templates` are linked to both configurations and nodes or clusters, therefore we need to list those in order to be able which cluster is using which configuration and be able to find out if it is relevant to the user. Due to this behaviour, manta won't process SAT files with only configurations unless they are esplicitly used in a `image` or a `session template`.
 
 #### The example below won't work