Update README.md

Author: m-kus

README.md

@@ -1,6 +1,6 @@
 # OpenAPI Typescript Codegen with TzKT extensions
 
-This is an extended version of the original library by (Ferdi Koomen)[https://github.com/ferdikoomen/openapi-typescript-codegen] with TzKT-specific features:
+This is an extended version of the original library by [Ferdi Koomen](https://github.com/ferdikoomen/openapi-typescript-codegen) with TzKT-specific features:
 * Query selectors `?field.eq=12345`
 * Anyof selector `?anyof.initiator.sender=KT1abcde`
 * JSON filters `?storage.ledger.[*].eq=12345`