DOC: peers: fix the protocol tag name in the doc

The peers protocol has been using "HAProxyS" as a binary tag sent on the
wire since day one in 1.5-dev3 with commit 2b920a1af ("[MAJOR] Add new
files src/peer.c, include/proto/peers.h and include/types/peers.h for
sync stick table management"), regardless, the doc says the protocol
identifier is "HaproxyS". It is likely this got fixed in the code before
merging and not in the doc.

This should be backported to any release as the doc is wrong.

(cherry picked from commit 84c4e7451eb99261758f3e009d3e938506dd8982)
Signed-off-by: Willy Tarreau <w@1wt.eu>
(cherry picked from commit 33dba69c142356192771530b844ba0cf40a47cf7)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit 405741274ce4c7a2c585063860b0387b5d0b1573)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
diff --git a/doc/peers-v2.0.txt b/doc/peers-v2.0.txt
index 344cb56..b9f82f7 100644
--- a/doc/peers-v2.0.txt
+++ b/doc/peers-v2.0.txt
@@ -1,4 +1,4 @@
-	Haproxy's peers v2.0 protocol 08/18/2016
+	HAProxy's peers v2.0 protocol 08/18/2016
 
 Author: Emeric Brun ebrun@haproxy.com
 
@@ -36,7 +36,7 @@
 <remotepeerid>
 <localpeerid> <processpid> <relativepid>
 
-protocol: current value is "HaproxyS"
+protocol: current value is "HAProxyS"
 version: current value is "2.0"
 remotepeerid: is the name of the target peer as defined in the configuration peers section.
 localpeerid: is the name of the local peer as defined on cmdline or using hostname.