Fix golint errors under confidence 0.1

1 files changed, 9 insertions, 1 deletions

diff --git a/datavalidation.go b/datavalidation.go
index 010615c..be3caab 100644
--- a/datavalidation.go
+++ b/datavalidation.go
@@ -1,3 +1,11 @@
+// Package excelize providing a set of functions that allow you to write to
+// and read from XLSX files. Support reads and writes XLSX file generated by
+// Microsoft Excel™ 2007 and later. Support save file without losing original
+// charts of XLSX. This library needs Go version 1.8 or later.
+//
+// Copyright 2016 - 2018 The excelize Authors. All rights reserved. Use of
+// this source code is governed by a BSD-style license that can be found in
+// the LICENSE file.
 package excelize
 
 import (
@@ -128,7 +136,7 @@ func (dd *DataValidation) SetSqrefDropList(sqref string, isCurrentSheet bool) er
 	}
 
 	//isCurrentSheet = false   Cross-sheet sqref cell use extLst xml node  unrealized
-	return fmt.Errorf("Cross-sheet sqref cell  are not supported")
+	return fmt.Errorf("cross-sheet sqref cell are not supported")
 }
 
 // SetSqref provides function to set data validation range in drop list.