doc: add returns for https.get

Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/58025
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

doc/api/https.md

@@ -341,6 +341,7 @@ changes:
 * `options` {Object | string | URL} Accepts the same `options` as
   [`https.request()`][], with the method set to GET by default.
 * `callback` {Function}
+* Returns: {http.ClientRequest}
 
 Like [`http.get()`][] but for HTTPS.