Fixed typo in header file documentation comment.
diff --git a/include/SDL_hints.h b/include/SDL_hints.h
index ebe7baa..3da3ec3 100644
--- a/include/SDL_hints.h
+++ b/include/SDL_hints.h
@@ -355,7 +355,7 @@ extern "C" {
* Use this hint in case you need to set SDL's threads stack size to other than the default.
* This is specially useful if you build SDL against a non glibc libc library (such as musl) which
* provides a relatively small default thread stack size (a few kilobytes versus the default 8MB glibc uses).
-* Support for this hint is currenly available only in the pthread backend.
+* Support for this hint is currently available only in the pthread backend.
*/
#define SDL_HINT_THREAD_STACK_SIZE "SDL_THREAD_STACK_SIZE"