Add the message at the end of the release points to new javadoc

[mstachniuk]

When plugin "org.shipkit.javadoc" is applied then the message at the end of the release should contain a link to the new released Javadoc.

Start point: https://github.com/mockito/shipkit/blob/4b65fe696f2fae7be07e3db77bda91be2299c217/subprojects/shipkit/src/main/groovy/org/shipkit/internal/notes/format/DetailedFormatter.java#L79