usbnet: fix ssh command (#95)

* usbnet: fix ssh command

* fix telnet command

Author: konradybcio

porting/debug-build/usbnet.rst

@@ -22,11 +22,11 @@ Then, run the following command as root on your phone:
 
 If you're in initrd debug (telnet)::
 
-   ip route add default gw 192.168.2.1
+   route add default gw 192.168.2.1
    
 If you're in the real rootfs (ssh)::
 
-   ip route add default gw 10.15.19.100
+   ip route add default via 10.15.19.100
 
 Then try ``ping 8.8.8.8`` from the phone. The pings should go through.