Fix typo: change footer year from 2022 to 2023#45625

Shahana-salam wants to merge 1 commit intoibm-developer-skills-network:masteribm-developer-skills-network/jbbmo-Introduction-to-Git-and-GitHub:masterfrom

Shahana-salam:bug-fix-typoShahana-salam/jbbmo-Introduction-to-Git-and-GitHub:bug-fix-typoCopy head branch name to clipboard