slightly shorter toString()

Change-Id: Iec1e96fcc829d081f4d1dce6f1111dcf9af19f64
Reviewed-on: https://asterix-gerrit.ics.uci.edu/1541
Sonar-Qube: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Michael Blow <mblow@apache.org>
diff --git a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/job/resource/ClusterCapacity.java b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/job/resource/ClusterCapacity.java
index ded4b63..1435ca7 100644
--- a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/job/resource/ClusterCapacity.java
+++ b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/job/resource/ClusterCapacity.java
@@ -120,6 +120,6 @@
 
     @Override
     public String toString() {
-        return "capacity (memory: " + aggregatedMemoryByteSize + " bytes, CPU cores: " + aggregatedCores + ")";
+        return "(memory: " + aggregatedMemoryByteSize + " bytes, CPU cores: " + aggregatedCores + ")";
     }
 }