The `prose lint (vale, errors)` CI gate fails on Microsoft.Contractions
at `setup.md:147`, in prose this branch adds.
Verified against the repo's own styles rather than assumed: with
`XDG_DATA_HOME=$PWD/.vale-data vale sync` (the ini's own note — sync
ignores `StylesPath` and writes under `$XDG_DATA_HOME`), the file
reports 0 errors, and a copy of it with the word put back reports that
line and nothing else. Without the sync, vale exits 2 on a missing
styles dir, which is a config error rather than a pass.
b0edb5b2cc