= Background information
/page/summary doesn't return displaytitle in the correct language variant
= How
It looks like `action=parse&prop=displaytitle` returns the correct `displaytitle`.
For example, with `Accept-Language: zh-Hans` header set for all requests listed
https://zh.wikipedia.org/api/rest_v1/page/summary/中國
incorrectly returns 中國
https://zh.wikipedia.org/w/api.php?format=json&titles=中國&action=query&ppprop=displaytitle&prop=pageprops
incorrectly returns 中國
https://zh.wikipedia.org/w/api.php?format=json&page=中國&action=parse&prop=displaytitle
correctly returns 中国
= Open questions
Could we add a request to `action=parse&prop=displaytitle` to get the `displaytitle` with the correct formatting and in the correct language variant based on the `Accept-Language` header?
= Acceptance criteria
- [] For wikis that have language variants, the correct displaytitle is returned from /page/summary based on the Accept-Language header. For example, https://zh.wikipedia.org/api/rest_v1/page/summary/中國 with `Accept-Language: zh-Hans` would return 中国