The NSH shutdown option should be called --reboot, not --reset, for compatibility with the statndard shutdown command

Documentation/NuttShell.html

@@ -2320,11 +2320,11 @@ sh <script-path>
 
 <p><b>Command Syntax:</b></p>
 <ul><pre>
-shutdown [--reset]
+shutdown [--reboot]
 </pre></ul>
 <p>
   <b>Synopsis</b>.
-  Shutdown and power off the system or, optionally, reset the system immediately.
+  Shutdown and power off the system or, optionally, reset and reboot the system immediately.
   This command depends on hardware support to power down or reset the system; one, both, or neither behavior may be supported.
 </p>