Examples in docs lead to dead links

[dstampher]

Thanks for everyone that contributed to this library.

I am new here and began reading the docs, and noticed some convenient links in the "Path Examples" section to see JSONPath in action. Unfortunately, those links are dead. I was really hoping to use them!

[akshaygao]

The Jayway JsonPath online evaluator (the Heroku app at https://jsonpath.herokuapp.com/) seems to be down. Without it, all the links in the example syntax queries go to broken pages.

[akshaygao]

@dstampher Try using https://www.javainuse.com/jsonpath or https://jsonpath.com/. Most of the path examples should work

[tresni]

I stood up an instance of the app on Fly.io - https://jsonpath.fly.dev/

I'll open a PR shortly with the configuration I used to do it.