[twitter] fix '_extractor' of following results (#4536)

regression from 20ed647f

docs/configuration.rst

@@ -3328,7 +3328,7 @@ extractor.twitter.users
 Type
     ``string``
 Default
-    ``"timeline"``
+    ``"user"``
 Example
     ``"https://twitter.com/search?q=from:{legacy[screen_name]}"``
 Description
@@ -3339,7 +3339,8 @@ Description
 
     Special values:
 
-    * ``"timeline"``: ``https://twitter.com/i/user/{rest_id}``
+    * ``"user"``: ``https://twitter.com/i/user/{rest_id}``
+    * ``"timeline"``: ``https://twitter.com/id:{rest_id}/timeline``
     * ``"tweets"``: ``https://twitter.com/id:{rest_id}/tweets``
     * ``"media"``: ``https://twitter.com/id:{rest_id}/media``
 

docs/gallery-dl.conf

@@ -335,7 +335,7 @@
             "text-tweets": false,
             "twitpic": false,
             "unique": true,
-            "users": "timeline",
+            "users": "user",
             "videos": true
         },
         "unsplash":

gallery_dl/extractor/twitter.py

@@ -406,9 +406,12 @@ class TwitterExtractor(Extractor):
 
     def _users_result(self, users):
         userfmt = self.config("users")
-        if not userfmt or userfmt == "timeline":
-            cls = TwitterTimelineExtractor
+        if not userfmt or userfmt == "user":
+            cls = TwitterUserExtractor
             fmt = (self.root + "/i/user/{rest_id}").format_map
+        elif userfmt == "timeline":
+            cls = TwitterTimelineExtractor
+            fmt = (self.root + "/id:{rest_id}/timeline").format_map
         elif userfmt == "media":
             cls = TwitterMediaExtractor
             fmt = (self.root + "/id:{rest_id}/media").format_map