Enable pkgdown's built in search

[eitsupi]

Currently, search does not appear to be enabled on the reticulate pkgdown site.
https://pkgdown.r-lib.org/news/index.html#local-search-2-0-0

[t-kalinowski]

Thanks for opening the issue. When I head to https://rstudio.github.io/reticulate/ I do see the search bar in the upper-right corner (screenshot below). Might I be misunderstanding what you were expecting to find? Happy to keep digging, just let me know.

[eitsupi]

Ah, sorry, I missed #1814!