Docs links in User, pricing and Core components READMEs fix

README.md

@@ -12,7 +12,7 @@ Modern ecommerce for PHP and Symfony2. Visit [Sylius.org](http://sylius.org).
 Documentation
 -------------
 
-Documentation is available on [**docs.sylius.org**](http://docs.sylius.org/en/latest/components/Core/index.html).
+Documentation is available on [**docs.sylius.org**](http://docs.sylius.org/en/latest/components/general/index.html).
 
 Contributing
 ------------