bug: Some of the icons in docs are not visible

[floatas]

Hello,
When going through docs I noticed that some of the icons are not visible in windows 10, would be nice to change them to universal icons that would work on all systems.

Describe the bug

Some of the icons in docs are not visible in windows 10.

Expected behavior

If there should be icon, than it should be visible on al systems

How to reproduce?

Navigate to docs: https://docs.logto.io/docs/tutorials/get-started/explore-management-api/

Screenshots