Example titles are not prefixed with Example N.

[Pierre De Rop]

Documentation Issue

The new antora version of the reactor-core documentation has the following issue: All example titles are not prefixed anymore with Example N., like it was the case before.

Also, the background color is not consistent as the one we had in previous asciidoc version.

Improvement Suggestion

I'm not sure, but this issue might be related to antora-ui-projectreactor

Additional context

see #3806 (comment)