update curl using bash code example

Example 1: how to use curl command in ubuntu

curl -o vue-v2.6.10.js https://cdn.jsdelivr.net/npm/vue/dist/vue.js

Example 2: how to use curl command in ubuntu

curl -O http://mirrors.edge.kernel.org/archlinux/iso/2018.06.01/archlinux-2018.06.01-x86_64.iso  \     -O https://cdimage.debian.org/debian-cd/current/amd64/iso-cd/debian-9.4.0-amd64-netinst.iso