Add comments for GenMeshTorus (#5934)

src/rmodels.c

@@ -3142,6 +3142,8 @@ Mesh GenMeshCone(float radius, float height, int slices)
 }
 
 // Generate torus mesh
+// The distance between the center of the hole and the center of the tube is half of size
+// The radius of the tube is (radius * size / 2)
 Mesh GenMeshTorus(float radius, float size, int radSeg, int sides)
 {
     Mesh mesh = { 0 };