[Mlir-commits] [mlir] Add a more complete example to mlir-reduce docs (PR #116085)

[Jeremy Kun]

j2kun wrote:

I updated the test in [da86256](https://github.com/llvm/llvm-project/pull/116085/commits/da862562f92730dedb73d980989ca67f799b103d) so that it does work at HEAD. I did this by changing the operation considered "interesting" that avoids the folding.

https://github.com/llvm/llvm-project/pull/116085