SDL: Add documentation to autotoo'ls sdl2-config-version.cmake.in

SDL Commits
1 
From 4809bd356e646a7706e00aa325c99fd8f3193c01 Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Mon, 30 May 2022 00:36:33 +0200
Subject: [PATCH] Add documentation to autotoo'ls sdl2-config-version.cmake.in

---
 sdl2-config-version.cmake.in | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sdl2-config-version.cmake.in b/sdl2-config-version.cmake.in
index c987bc1a01d..5c6aee44d47 100644
--- a/sdl2-config-version.cmake.in
+++ b/sdl2-config-version.cmake.in
@@ -1,3 +1,5 @@
+# sdl2 cmake project-config-version input for ./configure scripts
+
 set(PACKAGE_VERSION "@SDL_VERSION@")
 
 if(PACKAGE_VERSION VERSION_LESS PACKAGE_FIND_VERSION)
@@ -8,4 +10,3 @@ else()
     set(PACKAGE_VERSION_EXACT TRUE)
   endif()
 endif()
-