Update CloneContentCommand.php documentation

--search-for and --replace-with are not the correct arguments

src/Commands/Env/CloneContentCommand.php

@@ -35,7 +35,7 @@ class CloneContentCommand extends TerminusCommand implements SiteAwareInterface
      * Clones database/files from one environment to another environment.
      * WordPress sites will search the database for the default domain and
      * replace it with the target environment's domain unless you specify
-     * a different search/replace string with --search-for and --replace-with.
+     * a different search/replace string with --from-url and --to-url.
      *
      * IMPORTANT NOTE: if you have a WordPress Multisite installation, you
      * will need an entry in your pantheon.yml in order to search all the