PIG-5126 Adding the missed CHANGES.txt (knoguchi)


git-svn-id: https://svn.apache.org/repos/asf/pig/branches/branch-0.16@1782856 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/CHANGES.txt b/CHANGES.txt
index 819eab3..dddbf19 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -24,6 +24,8 @@
 
 IMPROVEMENTS
 
+PIG-5126. Add doc about pig in zeppelin (zjffdu)
+
 PIG-5037: Add api getDisplayString to PigStats (zjffdu)
 
 PIG-4945: Update document for conflicting macro params (knoguchi via daijy)