Update doc/whatsnew/fragments/9731.user_action

Author: Pierre-Sassoulas

doc/whatsnew/fragments/9731.user_action

@@ -1,6 +1,6 @@
 We migrated ``symilar`` to argparse, from getopt, so the error and help output changed
 (for the better). We exit with 2 instead of sometime 1, sometime 2. The error output
 is not captured by the runner anymore. It's not possible to use a value for the
-boolean options anymore (``--ignore-comments 2`` should become ``--ignore-comments``).
+boolean options anymore (``--ignore-comments 1`` should become ``--ignore-comments``).
 
 Refs #9731