net: fix up hash documentation

commit 61b905da33 ("net: Rename skb->rxhash to skb->hash")
didn't update the documentation, fix this up.

Cc: Tom Herbert <therbert@google.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/Documentation/networking/scaling.txt b/Documentation/networking/scaling.txt
index 59f4db2..f55639d 100644
--- a/Documentation/networking/scaling.txt
+++ b/Documentation/networking/scaling.txt
@@ -122,7 +122,7 @@
 or will be computed in the stack. Capable hardware can pass the hash in
 the receive descriptor for the packet; this would usually be the same
 hash used for RSS (e.g. computed Toeplitz hash). The hash is saved in
-skb->rx_hash and can be used elsewhere in the stack as a hash of the
+skb->hash and can be used elsewhere in the stack as a hash of the
 packet’s flow.
 
 Each receive hardware queue has an associated list of CPUs to which