SDL: fixed typo: ervironment to environment

From 34d9c2e28f057c04ef352384c9c19c3297dc19fe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E3=82=81=E3=81=90=E3=81=BF=E7=99=BA=E5=8B=95=E6=A9=9F=20?=
 =?UTF-8?q?=28isVowel=20/=20GreenWing=29?=
 <60494954+pancakevirus@users.noreply.github.com>
Date: Mon, 22 Nov 2021 13:02:06 +0900
Subject: [PATCH] fixed typo: ervironment to environment

---
 docs/README-os2.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/README-os2.md b/docs/README-os2.md
index d6fa6ffe92f..1815b944d03 100644
--- a/docs/README-os2.md
+++ b/docs/README-os2.md
@@ -33,7 +33,7 @@ Compiling:
 
 Open Watcom 1.9 or newer is tested. For the new Open Watcom V2 fork, see:
 https://github.com/open-watcom/ and https://open-watcom.github.io
-WATCOM ervironment variable must to be set to the Open Watcom install
+WATCOM environment variable must to be set to the Open Watcom install
 directory. To compile, run: wmake -f Makefile.os2