list_help_center_articles: take a row’s id (or
an article name) and read the whole article — its title, author description,
full body (markdown) and source url. An article in a collection the caller isn’t
entitled to reads as not found, exactly like an unknown id.
Parameters
Body
Body
string
required
The Help Center article id (as returned in the id field by
list_help_center_articles) or an article name, matched as a case-insensitive
substring of the title. A name matching no — or more than one — article
raises a clear error; pass the id to disambiguate.