Upgrade check-spelling to v0.0.25

Upgrade check-spelling to v0.0.25

Refresh metadata based on
https://github.com/check-spelling/spell-check-this/commit/8749d8d8b30b5dfb272ae9b4579c07a8165fc273

- SARIF reporting is enabled by default
  - When active, public repositories will need to add a code scanning ruleset
  - For private repositories, unless you're using GHEC and paying for Advanced Security, you'll want to set a repository actions variable `DO_NOT_USE_SARIF_REPORTING` (see `/settings/variables/actions`) to `1` to disable SARIF

- Extend checking
  - `.rst` docs
  - pdns/dnsdistdist/dnsdist-settings-definitions.yml