DOC: Fix typo in description of `-st` parameter in man page

extra "wait".
(cherry picked from commit 1458fdbe974562158fc40fd72d745d5fd644c939)
(cherry picked from commit f95dc972e2e9e3c245862e45336ff4f014ad5666)
diff --git a/doc/haproxy.1 b/doc/haproxy.1
index a836d5d..20c9343 100644
--- a/doc/haproxy.1
+++ b/doc/haproxy.1
@@ -149,9 +149,9 @@
 .TP
 \fB\-st <pidlist>\fP
 Send TERMINATE signal to the pids in pidlist after startup. The processes
-which receive this signal will wait immediately terminate, closing all
-active sessions. This option must be specified last, followed by any number
-of PIDs. Technically speaking, \fBSIGTTOU\fP and \fBSIGTERM\fP are sent.
+which receive this signal will terminate immediately, closing all active
+sessions. This option must be specified last, followed by any number of
+PIDs. Technically speaking, \fBSIGTTOU\fP and \fBSIGTERM\fP are sent.
 
 .SH LOGGING
 Since HAProxy can run inside a chroot, it cannot reliably access /dev/log.