Link to Spec Transformers post returns 404

[Damian Hryniewicz]

spec-tools/README.md

Line 20 in 7a3b59e

 * [Spec Transformers](https://www.metosin.fi/blog/spec-transformers/) 

Is there a chance this post is still available somewhere? If not, I could create a simple PR removing this line.

[Tommi Reiman]

I think this is the correct url: https://www.metosin.fi/blog/2018-05-14-spec-transformers

[Juho Teperi]

Post returned to the old URL