Update example reviews in the guides/book

[noamross]

We've had some really good ones recently, and I think we want to make sure all of them use the review template. The rtika review is great from my perspective because it has substantial feedback on both technical and documentation sides. The NLMR one is also probably good example.

[maelle]

bowerbird too

[maelle]

Closing this here in favor of the book repo.