Invalid syntax by accident

Author: kyb3r

core/thread.py

@@ -103,7 +103,7 @@ async def _close(self, closer, silent=False, delete_channel=True,
             return
 
         if self.bot.selfhosted:
-            log_url = f"{self.bot.config.log_url.strip('/')}/logs/{log_data["key"]}"
+            log_url = f"{self.bot.config.log_url.strip('/')}/logs/{log_data['key']}"
         else:
             log_url = f"https://logs.modmail.tk/{log_data['key']}"