UPSTREAM: wireguard: global: fix spelling mistakes in comments

This fixes two spelling errors in source code comments.

Signed-off-by: Josh Soref <jsoref@gmail.com>
[Jason: rewrote commit message]
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit a2ec8b5706944d228181c8b91d815f41d6dd8e7b)
Bug: 152722841
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Id8dbd0f7ffa71358b7ecdee6a890cdfb4341f3c1