Update docs/modules/hdfs/pages/usage-guide/upgrading.adoc

Co-authored-by: Nick <10092581+NickLarsenNZ@users.noreply.github.com>

Author: nightkr

docs/modules/hdfs/pages/usage-guide/upgrading.adoc

@@ -33,7 +33,7 @@ for proceeding with rolling upgrade
      Start Time: Fri Aug 02 15:49:12 GMT 2024 (=1722613752341)
   Finalize Time: <NOT FINALIZED>
 
-$ # It should look like this once ready
+$ # It is safe to proceed when the output indicates so, like this:
 $ hdfs dfsadmin -rollingUpgrade query
 QUERY rolling upgrade ...
 Proceed with rolling upgrade: