consolidate proxy storage (#3748)

SUSE/spacewalk#26181

Author: keichwa

modules/installation-and-upgrade/pages/container-deployment/mlm/proxy-deployment-vm-mlm.adoc

@@ -73,7 +73,7 @@ If you want to use a production environment and need background information abou
 [NOTE]
 ====
 [path]``/var/lib/containers/storage/volumes``
-Minimum 150 GB.
+Minimum 100 GB.
 Storage requirements should be calculated for the number of ISO distribution images, containers, and bootstrap repositories you will use.
 ====