Change wording

Author: kyb3r

core/thread.py

@@ -361,7 +361,7 @@ async def reply(self, message, anonymous=False):
             tasks.append(message.channel.send(
                 embed=discord.Embed(
                     color=discord.Color.red(),
-                    description='Your message could not be delivered because '
+                    description='Your message could not be delivered as '
                                 'the recipient is only accepting direct '
                                 'messages from friends, or the bot was '
                                 'blocked by the recipient.'