MinimumRecordCountValidator: tweak pass msg

Author: Sunjeet

hollow/src/main/java/com/netflix/hollow/api/producer/validation/MinimumRecordCountValidator.java

@@ -53,7 +53,7 @@ public ValidationResult onValidate(HollowProducer.ReadState readState) {
             return vrb.failed(message);
         }
 
-        return vrb.passed(getName() + " numRecords=" + recordCount + ", threshold=" + minRecordCount);
+        return vrb.passed("MinimumRecordCount type=" + typeName + ", numRecords=" + recordCount + ", threshold=" + minRecordCount);
     }
 
 }