documentation fail to build on v5.0.0

Hi,

Thanks for the v5 😄 I'm trying that in nixpkgs.

Doxygen v1.14.0 is failing with:

/build/source/doc/Manual.dox:656: error: expected <tr> or </table> tag but found token TK_HTMLTAG instead!
/build/source/doc/Manual.dox:177: error: unable to resolve link to 'Eigen::placeholders::lastN(SizeType)' for \link command
/build/source/doc/Manual.dox:178: error: unable to resolve link to 'Eigen::placeholders::lastN(SizeType,IncrType)' for \link command

For the first, I have no idea how to start looking for

For the others, a brutal workaround seems to be rm doc/TutorialSlicingIndexing.dox 😅