hmp: Add shortcut to stop command to match cont

Some commands such as quit or cont have one letter alternatives but
stop is missing that. Add stop|s to match cont|c for consistency and
convenience.

Signed-off-by: BALATON Zoltan <[email protected]>
Reviewed-by: Daniel P. Berrangé <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Laurent Vivier <[email protected]>

Author: zbalaton

hmp-commands.hx

@@ -382,15 +382,15 @@ SRST
 ERST
 
     {
-        .name       = "stop",
+        .name       = "stop|s",
         .args_type  = "",
         .params     = "",
         .help       = "stop emulation",
         .cmd        = hmp_stop,
     },
 
 SRST
-``stop``
+``stop`` or ``s``
   Stop emulation.
 ERST