Fixed typo in README.md footer from 2022 to 2023#37173

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

Balacerda:bug-fix-typoBalacerda/jbbmo-Introduction-to-Git-and-GitHub:bug-fix-typoCopy head branch name to clipboard