[BUG] Phosphor icons don't render #310
Description
Bug overview
Description: None of the phosphor icons appear in content. Prevents users from understanding what to click in a how-to.
Steps to reproduce: Go to https://app-superoffice-docs-dev.azurewebsites.net/en/learn/getting-started/main-screen/navigator
Expected result: See icon
Actual result: placeholder square shown instead
Additional details
Environment: Edge
Logs/screenshots:
