[twitter] update URL for syndication API (#3160)

Twitter changed the URL format to access tweet data through their syndication API.

gallery_dl/extractor/twitter.py

@@ -1456,8 +1456,8 @@ class TwitterAPI():
         self.extractor.log.debug("Skipping %s (\"%s\")", tweet_id, text)
 
     def _syndication_tweet(self, tweet_id):
-        tweet = self.extractor.request(
-            "https://cdn.syndication.twimg.com/tweet?id=" + tweet_id).json()
+        base_url = "https://cdn.syndication.twimg.com/tweet-result?id="
+        tweet = self.extractor.request(base_url + tweet_id).json()
 
         tweet["user"]["description"] = ""
         tweet["user"]["entities"] = {"description": {}}