doc: add https.Server extends tls.Server

PR-URL: #29256
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>

Author: trivikr

doc/api/https.md

@@ -49,8 +49,9 @@ changes:
 added: v0.3.4
 -->
 
-This class is a subclass of `tls.Server` and emits events same as
-[`http.Server`][]. See [`http.Server`][] for more information.
+* Extends: {tls.Server}
+
+See [`http.Server`][] for more information.
 
 ### server.close([callback])
 <!-- YAML