fix link

Author: ssssank

README.md

@@ -52,7 +52,7 @@ parameters:
     disallowMutatingFunctions: false
 ```
 
-[![Hexlet Ltd. logo](https://raw.githubusercontent.com/Hexlet/assets/master/images/hexlet_logo128.png)](https://hexlet.io/utm_source=github&utm_medium=link&utm_campaign=phpstan-functional-programming)
+[![Hexlet Ltd. logo](https://raw.githubusercontent.com/Hexlet/assets/master/images/hexlet_logo128.png)](https://hexlet.io/?utm_source=github&utm_medium=link&utm_campaign=phpstan-functional-programming)
 
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