fix typo for matrix
@@ -310,7 +310,7 @@ func (r Rect) Intersect(s Rect) Rect {
return t
}
-// Matrix is a 3x2 affine matrix that can be used for all kinds of spatial transforms, such
+// Matrix is a 2x3 affine matrix that can be used for all kinds of spatial transforms, such
// as movement, scaling and rotations.
//
// Matrix has a handful of useful methods, each of which adds a transformation to the matrix. For
