Why is FiraCode font in .otf format in v2.1.0 and only .ttf in v2.2.1?
For example：
v2.1.0
![QQ截图20220831091448](https://user-images.githubusercontent.com/45238096/187571341-3af3a2c9-e755-483f-afd1-930df50cd10c.png)

v2.2.1
![QQ截图20220831091503](https://user-images.githubusercontent.com/45238096/187571363-8409155b-ba6e-4b23-b381-36ce8505988c.png)
