message: Improve comment for `augmentMapAndBounds`
  Followup from a previous CL.
diff: @@ -502,10 +502,14 @@ void mlir::sinkLoop(OpPointer<AffineForOp> forOp, unsigned loopDepth) {
  }
  // Factors out common behavior to add a new `iv` (resp. `iv` + `offset`) to the
  -// lower (resp. upper) loop bound. When called for both results in:
  +// lower (resp. upper) loop bound. When called for both the lower and upper
  +// bounds, the resulting IR resembles:
  //
  // ```mlir
  -// for %i = max (`iv, ...) to min (`iv` + `offset`)
  +// for %i = max (`iv, ...) to min (`iv` + `offset`) {
  +// ...
  +// }
  +// ```
  static void augmentMapAndBounds(FuncBuilder *b, Value *iv, AffineMap *map,
  SmallVector<Value *, 4> *operands,
  int64_t offset = 0) {
  