remove newline on help message

rssbot.py

@@ -84,8 +84,7 @@ class RssBot:
             help_message = """I'm here to keep you updated on rss feeds!<br><br>
 Invite me to any room on {homeserver} and use the custom state event <code>de.eventscccde.rssbot</code> via 
 <code>/devtools</code> to set the rss feeds:<br>
-<code>
-{{
+<code>{{
   "feeds": [
     {{
       "url": "http://lorem-rss.herokuapp.com/feed?unit=day",