Fix: Update Copyright year in footer#1137

AditiShah17 wants to merge 1 commit intoibm-developer-skills-network:mainibm-developer-skills-network/mcino-Introduction-to-Git-and-GitHub:mainfrom

AditiShah17:bug-fix-typoAditiShah17/mcino-Introduction-to-Git-and-GitHub:bug-fix-typoCopy head branch name to clipboard