add a message after posting so dummies stop doing it 3 times

suchwow/routes/post.py

@@ -112,7 +112,8 @@ def create():
             post.save_thumbnail()
             url = url_for('post.read', id=post.id, _external=True)
             post_webhook(f"New post :doge2: [{post.id}]({url}) by `{submitter}` :neckbeard:")
-            return redirect(url)
+            flash("New post created and pending approval!")
+            return redirect(url_for("index"))
     return render_template("post/create.html")
 
 @bp.route("/post/<id>/approve")