remove empty lines in messages

bot.py

@@ -1,6 +1,7 @@
 import asyncio
 import logging
 import pickle
+import re
 import textwrap
 from asyncio import sleep
 
@@ -44,7 +45,7 @@ def process_event(event, template):
     description = description or "???"
     description = textwrap.shorten(description, width=512, placeholder="...")
 
-    return template.format(
+    output = template.format(
         title=event.name,
         date=date,
         location=location,
@@ -53,6 +54,10 @@ def process_event(event, template):
         description=description
     )
 
+    output = re.sub(r'(<br>)+', '<br>', output)
+
+    return output
+
 
 async def send_message(text):
     async with aiohttp.ClientSession() as session: