[commas] fix bad git diff example
[commas] fix bad git diff example

naustudio/javascript,getjll/JavaScript-Style-Guide,addshoppers/javascript,ljharb/javascript,codelegant/JavaScript,LodoSoftware/javascript-style-guide,allanfish/javascript,airbnb/javascript,bl00mber/javascript,xalexec/javascript,appcom-interactive/javascript,whichdigital/javascript-coding-standards,naustudio/javascript,codelegant/JavaScript,cloudability/javascript-style-guide,LodoSoftware/javascript-style-guide,pokelondon/javascript,nulogy/javascript,practicefusion/javascript,webcoding/javascript-style-guide