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-rw-r--r--sparkline.go2
1 files changed, 1 insertions, 1 deletions
diff --git a/sparkline.go b/sparkline.go
index 5a480b9..880724a 100644
--- a/sparkline.go
+++ b/sparkline.go
@@ -362,7 +362,7 @@ func (f *File) addSparklineGroupByStyle(ID int) *xlsxX14SparklineGroup {
// given formatting options. Sparklines are small charts that fit in a single
// cell and are used to show trends in data. Sparklines are a feature of Excel
// 2010 and later only. You can write them to an XLSX file that can be read by
-// Excel 2007 but they won't be displayed. For example, add a grouped
+// Excel 2007, but they won't be displayed. For example, add a grouped
// sparkline. Changes are applied to all three:
//
// err := f.AddSparkline("Sheet1", &excelize.SparklineOption{