new username in "update rec cred secret" step

Author: kaitlynmichael

content/operate/kubernetes/security/manage-rec-credentials.md

@@ -116,10 +116,10 @@ The credentials can be used to access the Redis Enterprise admin console or the
 
 1. Update the REC credential secret:
 
-    1. Save the existing username to a text file.
+    1. Save the new username to a text file.
 
         ```bash
-        echo -n "<current_username>" > username
+        echo -n "<new_username>" > username
         ```
 
     1. Save the new password to a text file.