Website: Contrast on webpage difficult to read for code chunks

sf: st_point signature wrong (typo)

<cheatsheet name>: <brief description of issue/question>

dplyr cheatsheet: code text is white and light yellow on white

add existing datatable_fr to cheatsheets/translation/french

shiny + shiny-python: Bring HTML up to date with key + pdf

shinychat: Add html cheatsheet

mall: Add html cheatsheet

Website: <brief description of issue/question>

Broken links (404) on https://rstudio.github.io/cheatsheets/html/shiny.html