Option to remove trailing slash

Currently, GH pages work like this:

1. Request /about
2. Nginx rewrite request to /about/
3. Fetch /about/index.html and send it back

Is it possible to add an option to enable the reverse behavior, e.g., favoring links like /about over /about/?

Behavior would be:

1. Request /about/
2. Nginx rewrite request to /about
3. Fetch /about/index.html and send it back

If the request is /about, fetch /about/index.html and send it back.