Update README.md

README.md

@@ -16,7 +16,7 @@ This package will help you organize and validate all your environment variables
 ## How does it work?
 It goes over the configuration you provide, and returns an object where the `key` is the `<ENV_PARAM_NAME>` and the value is `process.env[<ENV_PARAM_NAME>]` after it was validated and sanitized.
 
-#configuration
+### configuration
 
 `mandatory` - sets this param as mandatory.