When reviewing docs for 6.0, there seem to be broken docs with warnings over usage of <note> tags in majority and few others that are unrecognized by mdoc (link to mdoc schema : remarks).

Example of missing important note in 6.0 (left):

API Reference docs in review: https://github.com/dotnet/sqlclient-api-docs/pull/79 (notice warnings in build report)

This is currently a blocker for publishing .NET API reference docs for 6.0.