Update README

Author: mdeletter

README.md

@@ -8,6 +8,6 @@ docker run --rm -v $PWD:/app martijn/php-security-checker --path=/app
 ```
 
 More information:
-[1]: https://github.com/fabpot/local-php-security-checker
-[2]: https://hub.docker.com/repository/docker/martijn/php-security-checker
+* https://github.com/fabpot/local-php-security-checker
+* https://hub.docker.com/repository/docker/martijn/php-security-checker