setup-sdl: Fix typo in readme

From 8a9371323b55ba146ca03cfba64b8ef127a1ff5e Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Mon, 21 Aug 2023 14:55:30 +0200
Subject: [PATCH] Fix typo in readme

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

diff --git a/README.md b/README.md
index b1e3346..1fc0f25 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ First, make sure you're looking for SDL using `find_package`:
 find_package(SDL2 CONFIG REQUIRED)
 
 # SDL3
-find_package(SDL2 CONFIG REQUIRED)
+find_package(SDL3 CONFIG REQUIRED)

If CMake is still not able to find SDL, the minimum required CMake version of your project is probably less than 3.12.
Since this version, CMake will also look for packages using environment variables as hints (see CMP0074).