fix typo error

zamronypj · zamronypj · commit aa7bd2e18438 · 2021-02-18T07:50:02.000+08:00
diff --git a/security/handling-cors/index.md b/security/handling-cors/index.md
@@ -126,7 +126,7 @@ factory.allowedMethods(['*']);
 To allowed custom HTTP header
 
 ```
-factory..allowedHeaders(['X-My-Custom-Header']);
+factory.allowedHeaders(['X-My-Custom-Header']);
 ```
 
 To allowed all custom headers
