website: nitpick compaction docs

website/source/docs/builders/vmware.html.markdown

@@ -106,10 +106,11 @@ Optional:
   By default this is "output-BUILDNAME" where "BUILDNAME" is the name
   of the build.
 
-* `skip_compaction` (bool) - As of Packer 0.1.4, VMware-created disks are defragmented
-  and compacted at the end of the build process. If you are doing your own zeroing out
-  of the disks you may find that the compaction step results in slightly larger boxes.
-  Compaction will run unless you set this value to true.
+* `skip_compaction` (bool) -  VMware-created disks are defragmented
+  and compacted at the end of the build process using `vmware-vdiskmanager`.
+  In certain rare cases, this might actually end up making the resulting disks
+  slightly larger. If you find this to be the case, you can disable compaction
+  using this configuration value.
 
 * `shutdown_command` (string) - The command to use to gracefully shut down
   the machine once all the provisioning is done. By default this is an empty