Change footer in README#46207

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

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