It would be good if the docs would include information for people that want to start developing plugins against the paper-api. Things that it should (imo) include:
Maven/gradle info as well as common IDE setup information (e.g. Minecraft Development IntelliJ plugin)
Links to general plugin documentation on the Bukkit and Spigot wikis
Information regarding changed/added API and libraries (e.g. adventure). Ideally this would be pretty detailed but just having a general overview (e.g. important events and api groups like pre spawn and player profile) should be a big help for the start
It would be good if the docs would include information for people that want to start developing plugins against the paper-api. Things that it should (imo) include: