Add slightly better 'awk' condition

hello-world/update.sh

@@ -13,7 +13,7 @@ echo
 	docker run --rm hello-world
 	echo
 	echo '$ docker images hello-world'
-	docker images hello-world | awk -F'  +' '$2 == "TAG" || $2 == "latest" { print $1"\t"$2"\t"$3"\t"$5 }' | column -t -s$'\t'
+	docker images hello-world | awk -F'  +' 'NR == 1 || $2 == "latest" { print $1"\t"$2"\t"$3"\t"$5 }' | column -t -s$'\t'
 } | sed 's/^/\t/'
 
 echo