SDL: SDL_main.h: Minor documentation tweaks.

From 21c181b3b44fa84250a87a8c2a8057cd6f754a06 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Fri, 3 May 2024 09:48:27 -0400
Subject: [PATCH] SDL_main.h: Minor documentation tweaks.

---
 include/SDL3/SDL_main.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/SDL3/SDL_main.h b/include/SDL3/SDL_main.h
index c307005e77a9d..d92e67cd5a26d 100644
--- a/include/SDL3/SDL_main.h
+++ b/include/SDL3/SDL_main.h
@@ -156,11 +156,11 @@
 /**
  * Inform SDL to use the main callbacks instead of main.
  *
- * SDL does not define this macro, but will check if it is defined to any
- * value in SDL_main.h. If defined, SDL will expect the app to provide several
- * functions: SDL_AppInit, SDL_AppEvent, SDL_AppIterate, and SDL_AppQuit. The
- * app should not provide a `main` function in this case, and doing so will
- * likely cause the build to fail.
+ * SDL does not define this macro, but will check if it is defined when
+ * including `SDL_main.h`. If defined, SDL will expect the app to provide
+ * several functions: SDL_AppInit, SDL_AppEvent, SDL_AppIterate, and
+ * SDL_AppQuit. The app should not provide a `main` function in this case, and
+ * doing so will likely cause the build to fail.
  *
  * Please see [README/main-functions](README/main-functions), (or
  * docs/README-main-functions.md in the source tree) for a more detailed