Fltering: clean up autoban code

Author: Akarys42

bot/exts/filters/filter_lists.py

@@ -104,7 +104,7 @@ async def _add_data(
         # If it is an autoban trigger we send a warning in #mod-meta
         if comment and "[autoban]" in comment:
             await self.bot.get_channel(Channels.mod_meta).send(
-                f":warning: heads-up! The new filter `{content}` (`{comment}`) will automatically ban users."
+                f":warning: Heads-up! The new filter `{content}` (`{comment}`) will automatically ban users."
             )
 
         # Insert the item into the cache

bot/exts/filters/filtering.py

@@ -1,6 +1,6 @@
 import asyncio
 import re
-from datetime import datetime, timedelta
+from datetime import timedelta
 from typing import Any, Dict, List, Mapping, NamedTuple, Optional, Tuple, Union
 
 import arrow
@@ -375,8 +375,8 @@ async def _filter_message(self, msg: Message, delta: Optional[int] = None) -> No
                             await context.invoke(
                                 self.bot.get_command("tempban"),
                                 msg.author,
-                                datetime.now() + AUTO_BAN_DURATION,
-                                reason=AUTO_BAN_REASON.strip()
+                                arrow.utcnow() + AUTO_BAN_DURATION,
+                                reason=AUTO_BAN_REASON
                             )
 
                         break  # We don't want multiple filters to trigger