fix: space error (#39)

Woodii1998 · web-flow · commit 365ecf59c309 · 2023-11-01T15:47:29.000+08:00
diff --git a/docs/4-recipes/9-data-diagnosis/5-rule-engine.md b/docs/4-recipes/9-data-diagnosis/5-rule-engine.md
@@ -176,7 +176,7 @@ log_level == LogLevel.FATAL # 每当出现 FATAL 日志时触发
   ```
 
 <br />
-  
+
 - **timeout**
   
   `timeout(condition1, condition2, ..., duration)`
