scripts/setup: fix comment in generated .env file
scripts/setup: fix comment in generated .env file

Fix the comment in the generated .env file to correctly identify
scripts/setup as the creator of the .env file.

Signed-off-by: Alan Green <97e77871b5fcc4941bebceb4338c97c1fd149f8c@google.com>

google/CFU-Playground,google/CFU-Playground,google/CFU-Playground,google/CFU-Playground