From 2c22e05fc00a4dc145e6eb6a1eda0ce1c7f0aa7d Mon Sep 17 00:00:00 2001
From: Hai Zhu <35182391+cocolato@users.noreply.github.com>
Date: Thu, 8 Jan 2026 17:28:48 +0800
Subject: [PATCH] fix the cookbook doc

---
 docs/cookbook.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/cookbook.md b/docs/cookbook.md
index c9f9c2e..06a7a7f 100644
--- a/docs/cookbook.md
+++ b/docs/cookbook.md
@@ -32,7 +32,7 @@ You can modify the `dict` of data that will be logged by overriding the `process
 
 ```python
 class SillyFormatter(JsonFormatter):
-    def process_log_record(log_data):
+    def process_log_record(self, log_data):
         new_record = {k[::-1]: v for k, v in log_data.items()}
         return new_record
 ```