BZ2111569: Add clarification to the pruning images section

Author: xenolinux

modules/pruning-images-manual.adoc

@@ -6,7 +6,7 @@
 [id="pruning-images-manual_{context}"]
 = Manually pruning images
 
-The pruning custom resource enables automatic image pruning. However, administrators can manually prune images that are no longer required by the system due to age, status, or exceed limits. There are two methods to manually prune images:
+The pruning custom resource enables automatic image pruning for the images from the internal registry. However, administrators can manually prune images that are no longer required by the system due to age, status, or exceed limits. There are two methods to manually prune images:
 
 * Running image pruning as a `Job` or `CronJob` on the cluster.
 * Running the `oc adm prune images` command.

modules/pruning-images.adoc

@@ -6,8 +6,7 @@
 [id="pruning-images_{context}"]
 = Automatically pruning images
 
-Images that are no longer required by the system due to age,
-status, or exceed limits are automatically pruned. Cluster administrators can configure the Pruning Custom Resource, or suspend it.
+Images from the internal registry that are no longer required by the system due to age, status, or exceed limits are automatically pruned. Cluster administrators can configure the Pruning Custom Resource, or suspend it.
 
 .Prerequisites