Merge pull request #51965 from skopacz1/OCP1487_oc_mirror_fix

OCPBUGS#1487 - Updating oc mirror flag description

Author: jab-rh

modules/oc-mirror-command-reference.adoc

@@ -65,7 +65,7 @@ The following tables describe the `oc mirror` subcommands and flags:
 |Ignore past mirrors when downloading images and packing layers. Disables incremental mirroring and might download more data.
 
 |`--manifests-only`
-|Generate manifests for `ImageContentSourcePolicy` and `CatalogSource` objects to configure a cluster to use the mirror registry, but do not actually mirror any images.
+|Generate manifests for `ImageContentSourcePolicy` objects to configure a cluster to use the mirror registry, but do not actually mirror any images.
 
 |`--max-per-registry <int>`
 |Specify the number of concurrent requests allowed per registry. The default is `6`.