added channel_topic

bot.py

@@ -109,6 +109,7 @@ def get_meta_data(message: discord.Message):
         "channel_id": str(message.channel.id),
         "backlink": DISCORD_LINK + str(message.guild.id) + "/" + str(message.channel.id) + "/" + str(message.id),
         "text": message.content,
+        "channel_topic": message.channel.topic,
         "reactions_history": [],
         "links": re.findall(URL_REGEX, message.content),
     }