update(cmd/pull): remove outdate info from pull description

Signed-off-by: Aldo Lacuku <[email protected]>

cmd/registry/pull/pull.go

@@ -32,13 +32,9 @@ const (
 
 Artifact references are passed as arguments.
 
-A reference is either a simple name or a fully qualified reference ("<registry>/<repository>"),
+A reference is a fully qualified reference ("<registry>/<repository>"),
 optionally followed by ":<tag>" (":latest" is assumed by default when no tag is given).
 
-When providing just the name of the artifact, the command will search for the artifacts in
-the configured index files, and if found, it will use the registry and repository specified
-in the indexes.
-
 Example - Pull artifact "myplugin" for the platform where falcoctl is running (default) in the current working directory (default):
 	falcoctl registry pull localhost:5000/myplugin:latest