Update install.md
Update install.md

Fix link of pre-compilation binaries
cyongli/palo,imay/palo,morningman/palo,lingbin/palo,imay/palo,imay/palo,morningman/palo,cyongli/palo,imay/palo,cyongli/palo,cyongli/palo,imay/palo,lingbin/palo,morningman/palo,lingbin/palo,cyongli/palo,imay/palo,morningman/palo,morningman/palo,morningman/palo,lingbin/palo,lingbin/palo,cyongli/palo,lingbin/palo