Update .asf.yaml

Author: jamesfredley

.asf.yaml

@@ -39,7 +39,7 @@ github:
         - id: jdaugherty
           type: User
       wait_timer: 0
-  description: "The Grails Web Application Framework"
+  description: "Grails - the Web Application Framework"
   homepage: https://grails.apache.org/
 notifications:
   # GitHub related