Need actual examples of TDD PRs for readme

[hadley]

Start on a list using https://github.com/issues?page=2&q=is%3Aissue+is%3Aclosed+archived%3Afalse+label%3A%22tidy-dev-day+%3Anerd_face%3A%22

• typo in argument names_repair docs tidyr#865 / Fix typo in names_repair documentation (argument to pivot_wider()… tidyr#866
• Better examples for parse_number() readr#1057 / Added new examples to parse_number readr#1070
• map() documentation improvements purrr#671 / Improved documentation of map() purrr#689
• Improve geom_text documentation ggplot2#3753 / Improve geom_text documentation (#3753) ggplot2#3771

Bigger issues

• dplyr <-> base R translation vignette dplyr#4755 / Compare to base R vignette dplyr#4825

Non-documentation:

• Import rlang forcats#233 / Rlang call update forcats#240
• Tdd/issue128 oxford collapse r-lib/cli#132 / Use Oxford comma when collapsing r-lib/cli#128

[hadley]

A good example of a very detailed issue is r-lib/pkgdown#2727