add admin user magneo2 code example

Example 1: magento 2 create admin user

php bin/magento admin:user:create --admin-user=mageplaza --admin-password=WeLoveMagento [email protected] --admin-firstname=Mageplaza --admin-lastname=Family

Example 2: magento cli create admin user

php bin/magento admin:user:create --admin-user=mageplaza --admin-password=WeLoveMagento123 [email protected] --admin-firstname=Mageplaza --admin-lastname=Family