changed the footer of README.md#1731

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

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