Docs - product feedback: Automatic Let's encrypt with _redirects wildcard

The Automatic integration for Let's encrypt is not working when using a wildcard redirect in the _redirects file.

Steps to reproduce:

• Create new repo with whatever index.html to serve as an example
• add redirects file with content /* /index.html 200
• Add custom domain and try to verify with lets encrypt

Expected result: Getting the domain verified

Result: Let's encrypt verification fails.

This is probably because the redirect rule redirects the lets encrypt html page to index.html.

This is not mentioned in the docs.