Update README.md

Author: bestlong

README.md

@@ -4,6 +4,6 @@
 
 [Contribution Guide](http://laradock.io/contributing/#edit-base-image).
 
-[Workspace Docker Hub Repository](https://hub.docker.com/r/laradock/php-fpm/)
+[php-fpm Docker Hub Repository](https://hub.docker.com/r/laradock/php-fpm/)
 
 [Laradock Github Repository](https://github.com/Laradock/laradock).