Fix warning

Author: Kyle-Ye

Sources/OpenRenderBox/Version/ORBVersion.c

@@ -5,6 +5,6 @@
 #include <OpenRenderBox/ORBVersion.h>
 
 #if OPENRENDERBOX_RELEASE == OPENRENDERBOX_RELEASE_2024
-const double OpenRenderBoxVersionNumber __attribute__ ((used)) = (double)6.0;
+double OpenRenderBoxVersionNumber __attribute__ ((used)) = (double)6.0;
 const unsigned char OpenRenderBoxVersionString[] __attribute__ ((used)) = "@(#)PROAGRAM:OpenRenderBox  PROJECT:OpenRenderBox-6.0.87\n";
 #endif