Refer to KoralQuery instead of Koral

Change-Id: Ib7843f2b05c4b1bd7d15ae529153711aec3603a3
diff --git a/Changes b/Changes
index a0ed76c..1d5ba51 100644
--- a/Changes
+++ b/Changes
@@ -5,6 +5,7 @@
 	  setSpanQuery(), getRequest() (diewald)
 	- [cleanup] Removed deprecated method in KrillIndex:
 	  search() (diewald)
+        - [documentation] Refer to KoralQuery instead of Koral (diewald)
 
 0.55.5 2016-05-02
 	- [performance] Changed to a dynamic window for sorting in FocusSpans (margaretha)