message: Fix typo in comment in division algorithm
diff: @@ -433,7 +433,7 @@ pub fn div_rem(u: &BigUint, d: &BigUint) -> (BigUint, BigUint) {
  // q0, our guess, is calculated by dividing the last few digits of a by the last digit of b
  // - this should give us a guess that is "close" to the actual quotient, but is possibly
  // greater than the actual quotient. If q0 * b > a, we simply use iterated subtraction
  - // until we have a guess such that q0 & b <= a.
  + // until we have a guess such that q0 * b <= a.
  //
  let bn = *b.data.last().unwrap();
  