SDL: minor update to os/2 readme.

From 77a1ad1c61b66b4eb3f1c994969275c361ad13e9 Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Thu, 11 Nov 2021 23:40:24 +0300
Subject: [PATCH] minor update to os/2 readme.

---
 docs/README-os2.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs/README-os2.md b/docs/README-os2.md
index 1d9182e765..d6fa6ffe92 100644
--- a/docs/README-os2.md
+++ b/docs/README-os2.md
@@ -3,9 +3,9 @@ Simple DirectMedia Layer 2 for OS/2 & eComStation
 SDL port for OS/2, authored by Andrey Vasilkin <digi@os2.snc.ru>, 2016
 
 
-OpenGL, joystick and audio capture not supported by this port.
+OpenGL and audio capture not supported by this port.
 
-Additional environment variables (optional) for OS/2 version:
+Additional optional environment variables:
 
 SDL_AUDIO_SHARE
   Values: 0 or 1, default is 0