Typo fix, rename exported constants, dependencies modules and copyright update

Rename exported constants `NameSpaceDublinCoreMetadataIntiative` to `NameSpaceDublinCoreMetadataInitiative`

1 files changed, 1 insertions, 1 deletions

diff --git a/sheetpr.go b/sheetpr.go
index 6f46040..d7e6d2a 100644
--- a/sheetpr.go
+++ b/sheetpr.go
@@ -1,4 +1,4 @@
-// Copyright 2016 - 2021 The excelize Authors. All rights reserved. Use of
+// Copyright 2016 - 2022 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.
 //