neterion: remove reference to ifconfig

Remove reference to obsolete ifconfig command.
MTU can be changed with ip command instead.
Signed-off-by: NStephen Hemminger <stephen@networkplumber.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Documentation/networking/s2io.txt

@@ -38,7 +38,7 @@ The corresponding adapter's LED will blink multiple times.
 
 3.	Features supported:
 a. Jumbo frames. Xframe I/II supports MTU up to 9600 bytes,
-modifiable using ifconfig command.
+modifiable using ip command.
 
 b. Offloads. Supports checksum offload(TCP/UDP/IP) on transmit
 and receive, TSO.

Documentation/networking/vxge.txt

@@ -39,7 +39,7 @@ iii) PCI-SIG's I/O Virtualization
 
 iv)  Jumbo frames
        X3100 Series supports MTU up to 9600 bytes, modifiable using
-       ifconfig command.
+       ip command.
 
 v)   Offloads supported: (Enabled by default)
        Checksum offload (TCP/UDP/IP) on transmit and receive paths