What behaviour do you expect?

The links with the names of the different database systems in the "What databases can Debezium monitor?" section of the Frequently Asked Questions should work, for instance, "PostgreSQL servers" should point to https://debezium.io/documentation/reference/stable/connectors/postgresql.html

What behaviour do you see?

The links point to "1.0" and "dbname/" instead of "dbname.html" resulting in "Page Not Found"