The link is unreadable on Unity professional theme under Rider Preferences

Steps to Repro:
1. Create a new Project
2. Window > Package Manager
3. Install Rider Editor package
4. Edit > Preferences > Rider

Actual Result:
Link is not readable

Expected Result:
The link should be clearly readable on both Unity personal and professional theme

Environment tested on:
Windows 10, Mac 10.14

Occurring with:
2019.3.0a5, 2019.2.0b6

Occurring in Package Version:
1.0.8

Note: Rider Preference setting is introduced with version 1.0.8