Check for x.com when accidentally trying to use the URL submission on…

… the admin page

I can keep pretending that Twitter is still named Twitter right?

SeattleCarsInBikeLanes/Controllers/AdminPageController.cs

@@ -618,7 +618,7 @@ public async Task<IActionResult> PostTweet([FromBody] PostTweetRequest request)
 
                 helperMethods.DisposePictureStreams(pictureStreams);
             }
-            else if (request.PostUrl.Contains("twitter.com"))
+            else if (request.PostUrl.Contains("twitter.com") || request.PostUrl.Contains("x.com"))
             {
                 throw new Exception("Reading tweets from Twitter no longer works. Please copy/paste the tweet body, image links, and tweet link into the appropriate locations.");
             }