Javadoc generation issues

[johnttompkins]

Some problematic errors when generating javadocs around code block tags and referencing a getter generated by lombok. The @APinote tag also is not working correctly.

[johnttompkins]

Code block issue here: https://github.com/aws-cloudformation/aws-cloudformation-rpdk-java-plugin/blob/master/src/main/java/software/amazon/cloudformation/proxy/CallChain.java#L28-L62

Issue with referencing lombok getter: https://github.com/aws-cloudformation/aws-cloudformation-rpdk-java-plugin/blob/master/src/main/java/software/amazon/cloudformation/proxy/CallChain.java#L199

Apinote not recognized here: https://github.com/aws-cloudformation/aws-cloudformation-rpdk-java-plugin/blob/master/src/main/java/software/amazon/cloudformation/scheduler/CronHelper.java#L50