fix tutorial in appdev hands-on
fix tutorial in appdev hands-on

Signed-off-by: pottava <72358dfbce9f816ef53df88f41548f55797d18ad@gmail.com>

GoogleCloudPlatform/gcp-getting-started-lab-jp,GoogleCloudPlatform/gcp-getting-started-lab-jp,GoogleCloudPlatform/gcp-getting-started-lab-jp,GoogleCloudPlatform/gcp-getting-started-lab-jp