The benchmark times in docs/src/showcase/brusselator.md do not display the actual benchmark times, only the benchmarked code's output

[adam-jahraus]

Describe the bug 🐞
The benchmark times in docs/src/showcase/brusselator.md do not display the actual benchmark times, only the benchmarked code's output

I'm not sure this is a bug to be honest, but it is an error in the documentation.

Expected behavior

The docs for the benchmarking sections should output the actual benchmarked time, otherwise it's impossible to see the actual performance improvements that the optimizations made in the code.