updated comment in examples/helloGretty/build.gradle
updated comment in examples/helloGretty/build.gradle

aya-eiya/gretty,cwardgar/gretty,saladinkzn/gretty,akhikhl/gretty,cwardgar/gretty,akhikhl/gretty,akhikhl/gretty,WilliamRen/gretty,cwardgar/gretty