[PATCH] fixing adaptive-red average queuing in man/man8/tc-red.8

This patch fixes a mistake in documenting adaptive-RED's formula of
average queuing in man. The ARED's target average queuing is
(max+min)/2.

Regards,

diff --git a/man/man8/tc-red.8 b/man/man8/tc-red.8
index f410d15..466000d 100644
--- a/man/man8/tc-red.8
+++ b/man/man8/tc-red.8

@@ -127,7 +127,7 @@ adaptive
 (Added in linux-3.3) Sets RED in adaptive mode as described in

http://icir.org/floyd/papers/adaptiveRed.pdf
 .nf
 Goal of Adaptive RED is to make 'probability' dynamic value between
1% and 50% to reach the target average queue :
-.B (max - min) / 2
+.B (max + min) / 2
 .fi

 .SH EXAMPLE