update visual studio code en centos 7 code example

Example: install vscode centos 7

sudo rpm --import https://packages.microsoft.com/keys/microsoft.asc
sudo nano /etc/yum.repos.d/vscode.repo
	[code]
	name=Visual Studio Code
	baseurl=https://packages.microsoft.com/yumrepos/vscode
	enabled=1
	gpgcheck=1
	gpgkey=https://packages.microsoft.com/keys/microsoft.asc
sudo yum install code
sudo yum update