message: Clarify that a maintenance of 'none' shows no badge on crates.io
diff: @@ -244,9 +244,9 @@ is-it-maintained-issue-resolution = { repository = "..." }
  # Is it maintained percentage of open issues: `repository` is required.
  is-it-maintained-open-issues = { repository = "..." }
  -# Maintenance: `status` is required Available options are `actively-developed`,
  -# `passively-maintained`, `as-is`, `none`, `experimental`, `looking-for-maintainer`
  -# and `deprecated`.
  +# Maintenance: `status` is required. Available options are `actively-developed`,
  +# `passively-maintained`, `as-is`, `experimental`, `looking-for-maintainer`,
  +# `deprecated`, and the default `none`, which displays no badge on crates.io.
  maintenance = { status = "..." }
  ```
  