autoconf: fix a typo

https://github.com/libsdl-org/autoconf/commit/9db4522239d0143afa0a56cb93d8228c520d0737

From 9db4522239d0143afa0a56cb93d8228c520d0737 Mon Sep 17 00:00:00 2001
From: Jim Meyering <[EMAIL REDACTED]>
Date: Wed, 1 Sep 2021 08:50:30 +0200
Subject: [PATCH] fix a typo

* doc/autoconf.texi (Integer Overflow): Fix typo: s/many/may/
---
 doc/autoconf.texi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 34559414..db736c7f 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -21709,7 +21709,7 @@ the programs work well enough in practice.
 Although some traditional C programs assume that signed integer overflow
 wraps around reliably using two's complement arithmetic, the C standard
 says that program behavior is undefined on overflow, and these C
-programs many not work on many modern implementations.
+programs may not work on many modern implementations.
 
 @menu
 * Integer Overflow Basics::     Why integer overflow is a problem