Update copyright year to 2023#3157

kevinzshan wants to merge 1 commit intoibm-developer-skills-network:mainibm-developer-skills-network/mcino-Introduction-to-Git-and-GitHub:mainfrom

kevinzshan:bug-fix-typokevinzshan/mcino-Introduction-to-Git-and-GitHub:bug-fix-typoCopy head branch name to clipboard