Fix XRandR dynamic library name on Linux

Author: Tutez64

project/lib/custom/sdl/include/SDL_config_linux.h

@@ -273,7 +273,7 @@
 /* #undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XCURSOR */
 #define SDL_VIDEO_DRIVER_X11_DYNAMIC_XINERAMA "libXinerama.so.1"
 #define SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2 "libXi.so.6"
-#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR "libxrandr.so.2"
+#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR "libXrandr.so.2"
 /* #undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XSS */
 /* #undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XVIDMODE */
 /* #undef SDL_VIDEO_DRIVER_X11_XCURSOR */