SDL: include: Added a tiny bit to SDL_sensor.h's category documentation.

SDL Commits
1 
From 90b2e2527eeb6614cedd15f61062f62680252be6 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Mon, 20 Jan 2025 01:39:37 -0500
Subject: [PATCH] include: Added a tiny bit to SDL_sensor.h's category
 documentation.

Reference Issue #11847.
---
 include/SDL3/SDL_sensor.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/SDL3/SDL_sensor.h b/include/SDL3/SDL_sensor.h
index 1377c10219b9a..83e70839b3250 100644
--- a/include/SDL3/SDL_sensor.h
+++ b/include/SDL3/SDL_sensor.h
@@ -24,6 +24,8 @@
  *
  * SDL sensor management.
  *
+ * These APIs grant access to gyros and accelerometers on various platforms.
+ *
  * In order to use these functions, SDL_Init() must have been called with the
  * SDL_INIT_SENSOR flag. This causes SDL to scan the system for sensors, and
  * load appropriate drivers.