[Bug libstdc++/40380] class documentation should mention include file to use

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=40380

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Busg like this make me wonder if we wouldn't be better simply replacing our
Doxygen API docs with a link to cppreference.com which is far more complete and
has better formatting and cross referencing.