message: change SNI domains to SNI domain names, explain the wildcard prefix
diff: @@ -48,8 +48,11 @@ message Filter {
  // Specifies the match criteria for selecting a specific filter chain for a
  // listener.
  message FilterChainMatch {
  - // If non-empty, the SNI domains to consider. May contain a wildcard prefix,
  - // e.g. ``*.example.com``.
  + // If non-empty, the SNI domain names to consider. May contain a wildcard prefix for
  + // the bottom-level domain of a domain name, e.g. ``*.example.com``. Note that
  + // ``foo.example.com`` will be matched by ``foo.example.com`` and ``*.example.com``
  + // SNI domain names, but **not** by ``*foo.example.com``, ``*oo.example.com``,
  + // ``*example.com``, ``*.com`` or ``*``.
  //
  // .. attention::
  //
  