update version of node windows code example

Example 1: how to update node in ubuntu 18.04

# Using Ubuntu
curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
sudo apt-get install -y nodejs

Example 2: update node js version ubuntu

sudo npm cache clean -f
sudo npm install -g n
sudo n stable

Example 3: node change version windows

npm install -g node@<version>

Example 4: update nodejs version

npm cache clean -f