Fix comment

src/geometry/quaternion.ts

@@ -281,7 +281,7 @@ export class Quaternion
         (expand h q* = (x_h i + y_h j + z_h k + w_h) (-x i - y j - z k + w) to see)
 
         Note that matrices L_q and R_h* have orthogonal columns / rows and are
-        symmetric. Additionally, L_q' = L_q* and R_q' = R_q* (note the symmetry)
+        antisymmetric. Additionally, L_q' = L_q* and R_q' = R_q* by symmetry.
 
         ---