Links to Testcontainers javadoc for many classes not in the core testcontainers module do not work

[wilkinsona]

This is complicated by the org.testcontainers.containers package being split across multiple modules in some cases. For example, the jdbc module provides JdbcDatabaseContainer in the general org.testcontainers.containers package while the activemq module provides ActiveMQContainer in the org.testcontainers.activemq package.