How to attach an internal link in GitHub's README

If you want to write GitHub's README in English, you can attach an internal link as follows:

##Table of content
- Usage (#usage)

## Usage 
Conceptetur Commodore Cursus Solicitudin Vehicula

However, in the case of Japanese, the URL is the one encoded in Japanese, so you cannot use the same method as in English.Of course, I think I can do it by doing the following, but I don't think it's cool to write HTML here even though I'm writing in Markdown.

## Contents
- [How to use] (#usage)

<h2id="usage">How-to</h2>
Conceptetur Commodore Cursus Solicitudin Vehicula

If I want to write like README in English, how can I attach an internal link in Japanese?Or do I have to write a part of it in HTML?

add
Based on your comments, it seems that the behavior around here differs depending on the browser, so I will add the situation in various browsers.As a result of verification, the internal link in Japanese will not work for WebKit.

OK:

• Firefox 35.0
• Firefox 37.0

NG:

• Chrome 40.0
• Chrome Canary 42.0
• Safari 8.0