regression: htmlproofer errors relating to language tour translations

[SethTisue]

lots of errors at e.g. https://platform-ci.scala-lang.org/scala/docs.scala-lang/553

example:

- ./_site/ba/tour/abstract-types.html
258s
758
  *  internally linking to /zh-cn/tour/abstract-types.html, which does not exist (line 3076)
258s
759
     <a href="/zh-cn/tour/abstract-types.html" class="lang">中文 (简体)</a>
258s
760
- ./_site/ba/tour/annotations.html

maybe caused by #1106 ...?

anyone know what's going on here?