security: struct security_operations kerneldoc fix

unix_may_send hook has the prototype:

int (*unix_may_send) (struct socket *sock, struct socket *other)

so the documentation is wrongly referring to the second argument as @sock.
Signed-off-by: NJavier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

include/linux/security.h

@@ -812,7 +812,7 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts)
  *	Check permissions before connecting or sending datagrams from @sock to
  *	@other.
  *	@sock contains the socket structure.
- *	@sock contains the peer socket structure.
+ *	@other contains the peer socket structure.
  *	Return 0 if permission is granted.
  *
  * The @unix_stream_connect and @unix_may_send hooks were necessary because