DOC: config: fix wrong section number for "protocol prefixes"

The socket type prefixes used to reference section "11.5.3" instead of
"11.3" for "protocol prefixes".

(cherry picked from commit d4c6fbe87e92168531730491c23b86f1bb52eaac)
Signed-off-by: Willy Tarreau <w@1wt.eu>
(cherry picked from commit 41664236b7b8d1cc8ca146df0b4b8f41a362406f)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit 398eea103e884df8a2e6a3b36982a9894ab9281f)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit 53809eb4b6b09d30b82cd4b6b419d4dcf16bec63)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
diff --git a/doc/configuration.txt b/doc/configuration.txt
index 1b7bf07..1e23305 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -22197,7 +22197,7 @@
 but we could force to use syslog over TCP.
 
 Those prefixes were designed for internal purpose and users should
-instead use aliases of the next section "11.5.3 Protocol prefixes".
+instead use aliases of the next section "11.3 Protocol prefixes".
 
 If users need one those prefixes to perform what they expect because
 they can not configure the same using the protocol prefixes, they should