The list of stdlibs in the sidebar of the julia docs appears to be sorted by the module name, whereas the title in the docs may be different. Typically this does not affect sorting (e.g. the title of the main page of the FileWatching docs is "File Events", so it ends up in the same place on the list in the docs' sidebar); but in some cases, the custom title starts with a different letter, leading to an awkward ordering. This is most notable and jarring in the case of Libdl → "Dynamic Linker" and Test → "Unit Testing", but also REPL → "The Julia REPL", to a lesser degree.

Either the title (or name) of those modules should be changed to align more closely with the name of the module, or the docs should sort the stdlibs by the custom title rather than by the module name.