The "Reference in new issue" option shows up in a menu when looking at
pull requests. All the other options there follow the "Title case":
* Copy Link
* Quote Reply
* Edit
This patch makes sure this option also follow the Title case.
Screenshot of how it looks without this patch:
![image](https://user-images.githubusercontent.com/843498/219346003-728d07c1-d150-41a5-b084-faef118228b1.png)
Co-authored-by: Dalai Felinto <dalai@blender.org>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>