Dead links in the "readthedocs" doc website

[DjebbZ]

Hello,

In the doc website the top-right link Suggest an edit points to the master branch of the code.

Problem:

Some files don't exist in the master branch but do in previous stable releases of the crate.

How to reproduce:

In the Integrations page, all the the example links are broken, but also the Suggest an edit link! They all points to the master branch where the files they point to don't exist anymore.

Suggested solution:

I'm not sure about the authoring workflow for rinja, but since I was visiting the stable version of the docs (selected on the bottom left), links should point to the same stable version of the code, not master.