[Suggest]Make docstring foldable on web page?

[XLin0mu]

Could we make this block foldable? Otherwise it make docpage too long for viewing when there's so many docstrings especially in Julia Language Manual.

[mortenpi]

This is already implemented, just not in a release: #2078. You can try it out on the dev version docs of Documenter for example: https://documenter.juliadocs.org/dev/lib/public/

[gdalle]

Bumping to reopen because I think a keyword argument that folds everything by default would make sense. It was mentioned in #2078 but kept for a later PR.

[mortenpi]

@gdalle I would suggest opening a new issue for that.