Broken links in Html docs

[abitrolly]

https://package.elm-lang.org/packages/elm/html/1.0.0/ contains a couple of broken links.

• https://guide.elm-lang.org/architecture/user_input/buttons.html
• https://guide.elm-lang.org/reuse/

There is a pull request to fix the first link.

• https://github.com/elm/html/pull/202/files

And merged, but not deployed pull request to fix the second.

• https://github.com/elm/html/issues/193

Are there any maintainers besides @evancz you can take care of core Elm packages such as elm/html?