link zend coding standard

samsonasik · samsonasik · commit 7dbcb8d97470 · 2019-01-29T12:14:07.000+07:00
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -3,7 +3,7 @@ CONTRIBUTING
 To contribute, you can send pull requests with :
 
 - Typo fix.
-- Use PSR-2 Coding Standard.
+- Use [Zend Coding Standard](https://github.com/zendframework/zend-coding-standard).
 - patch(es) need new/updated test(s).
 - new feature(s) need test(s).
 
