Line length

[olivroy]

This PR looks fairly large.

However, it may help with documentation debugging later.

Styled according to: https://style.tidyverse.org/documentation.html

It will be easier to pinpoint things when using find in files and ctrl + f in general.

To improve readability, I use 2 spaces, when param descriptions take up more than 2 lines.

You don't have to bother following this style for future doc writing (I find it a bit more effective to write it and then do bulk review at the end.)

This aims to reduce maintenance burden of documentation. When I will have a better understanding of the tmap internals, I will be able to consolidate bits that are reused in tmap. Example of what I did in openxlsx2 after cleaning up docs. https://github.com/JanMarvin/openxlsx2/pull/769/files