use before_ and after_content where they were intended to be used

cogs/logs.py

@@ -219,7 +219,7 @@ class Logs(Cog):
         msg = "📝 **Message edit**: \n"\
               f"from {self.bot.escape_message(after.author.name)} "\
               f"({after.author.id}), in {after.channel.mention}:\n"\
-              f"```{before.clean_content}``` → ```{after.clean_content}```"
+              f"```{before_content}``` → ```{after_content}```"
 
         # If resulting message is too long, upload to hastebin
         if len(msg) > 2000: