[ub] and [ifndr] remove extra line breaks after ubxref and ifndrxref#8716

jensmaurer merged 1 commit intocplusplus:ub-ifndrcplusplus/draft:ub-ifndrfrom

notadragon:ub-ifndr-linebreaksnotadragon/cplusplus_draft:ub-ifndr-linebreaksCopy head branch name to clipboard