Fixed the types of `sscDomain` and `sscServer` (#215)
Fixed the types of `sscDomain` and `sscServer` (#215)

* Fixed the types of sscDomain and sscServer

* Fixed typo

* Fixed documentation styles: added punctuations and colons, and fixed the value style to match others.
treasure-data/td-js-sdk,treasure-data/td-js-sdk