Is this a bug report?

No, feature request

Have you read the Contributing Guidelines on issues?

Yup

Environment

docusaurus@1.0.14, the rest N/A

Steps to Reproduce

(Write your steps here:)

1. Have a translation on Crowdin
2. Open the translation in the app
3. Hit "Edit"

Expected Behavior

The document should be opened up in Crowdin in the currently selected language so the user can edit it

Actual Behavior

The English version (or whatever default language the website is in) of the doc is opened on GitHub

Reproducible Demo

See e.g. Jest: https://facebook.github.io/jest/docs/es-ES/using-matchers.html