docs: Fix link to react-styleguidist

Author: danez

README.md

@@ -9,7 +9,7 @@ It provides a default implementation for React components defined via
 (stateless components). These component definitions must follow certain
 guidelines in order to be analyzable (see below for more info).
 
-> react-docgen is a low level tool to extract information about react components. If you are searching for a more high level tool try https://github.com/styleguidist/react-styleguidist which comes with a complete styleguide and is build on top of react-docgen.
+> react-docgen is a low level tool to extract information about react components. If you are searching for a more high level tool try [react-styleguidist](https://github.com/styleguidist/react-styleguidist) which comes with a complete styleguide and is build on top of react-docgen.
 
 ## Install