Updated footer in README.md#36298

user022097 wants to merge 1 commit intoibm-developer-skills-network:masteribm-developer-skills-network/jbbmo-Introduction-to-Git-and-GitHub:masterfrom

user022097:bug-fix-typouser022097/jbbmo-Introduction-to-Git-and-GitHub:bug-fix-typoCopy head branch name to clipboard