Fix copyright in wrong position
Fix copyright in wrong position

mimisasouvanh/Open-XML-SDK,modulexcite/Open-XML-SDK,KuPai32G/Open-XML-SDK,syediddi/Open-XML-SDK,syediddi/Open-XML-SDK,EricWhiteDev/Open-XML-SDK,JesseQin/Open-XML-SDK,EricWhiteDev/Open-XML-SDK,modulexcite/Open-XML-SDK,KuPai32G/Open-XML-SDK,ClareMSYanGit/Open-XML-SDK,ThomasBarnekow/Open-XML-SDK,tomjebo/Open-XML-SDK,OfficeDev/Open-XML-SDK,tarunchopra/Open-XML-SDK