modified discriminator (#1050)

refactor username to be displayed for gists

Author: vishv843

application/src/main/java/org/togetherjava/tjbot/features/filesharing/FileSharingMessageListener.java

@@ -135,7 +135,7 @@ private void processAttachments(MessageReceivedEvent event,
             .build()
             .createGist()
             .public_(false)
-            .description("Uploaded by " + event.getAuthor().getAsTag());
+            .description("Uploaded by " + event.getAuthor().getName());
 
         List<CompletableFuture<Void>> tasks = new ArrayList<>();