docs. Regen CLI docs

Closes #9363

docs/content/en/commands/hugo_mod.md

@@ -45,6 +45,7 @@ See https://gohugo.io/hugo-modules/ for more information.
       --minify                 minify any supported output format (HTML, XML etc.)
       --noChmod                don't sync permission mode of files
       --noTimes                don't sync modification time of files
+      --panicOnWarning         panic on first WARNING log
       --path-warnings          print warnings on duplicate target paths etc.
       --poll string            set this to a poll interval, e.g --poll 700ms, to use a poll based approach to watch for file system changes
       --print-mem              print memory usage to screen at intervals