Update to Automation category

Improved links and sorted list.

README.md

@@ -55,9 +55,9 @@ A curated list of amazingly awesome open source sysadmin resources inspired by [
 ## Automation
 *Automation build.*
 
-* [GNU Make](http://www.amanda.org/) - The most popular automation build tool for many purposes.
+* [Apache Ant](https://ant.apache.org/) - Automation build tool, similar to make, written in Java.
 * [Apache Maven](http://maven.apache.org/) - Build automation tool mainly for Java.
-* [Apache Ant](http://www.bacula.org/) - Automation build tool, similar to make, written in Java.
+* [GNU Make](http://www.gnu.org/software/make/) - The most popular automation build tool for many purposes.
 * [Gradle](http://gradle.org/) - Another open source build automation system.
 
 ## Backups