cmd: Correct help output (#480)

tool/cmdline.ggo

@@ -71,8 +71,8 @@ option "serial" - "Serial number of the self-signed certificate" int optional
 option "valid-days" - "Time (in days) until the self-signed certificate expires" int optional default="365"
 option "pin" P "Pin/puk code for verification, if omitted pin/puk will be asked for" string optional
 option "new-pin" N "New pin/puk code for changing, if omitted pin/puk will be asked for" string optional dependon="pin"
-option "pin-policy" - "Set pin policy for action generate or import-key. Only available on YubiKey 4" values="never","once","always" enum optional
-option "touch-policy" - "Set touch policy for action generate, import-key or set-mgm-key. Only available on YubiKey 4" values="never","always","cached" enum optional
+option "pin-policy" - "Set pin policy for action generate or import-key. Only available on YubiKey 4 or newer" values="never","once","always" enum optional
+option "touch-policy" - "Set touch policy for action generate, import-key or set-mgm-key. Only available on YubiKey 4 or newer" values="never","always","cached" enum optional
 option "id" - "Id of object for write/read object" int optional
 option "format" f "Format of data for write/read object" values="hex","base64","binary" enum optional default="hex"
 option "sign" - "Sign data" flag off hidden