(AzureCXP) fixes MicrosoftDocs/azure-docs#113857

Changes made in line no 55 to 59
From 

sudo sed -i 's/http:\/\/archive\.ubuntu\.com\/ubuntu\//http:\/\/azure\.archive\.ubuntu\.com\/ubuntu\//g' /etc/apt/sources.list
sudo sed -i 's/http:\/\/[a-z][a-z]\.archive\.ubuntu\.com\/ubuntu\//http:\/\/azure\.archive\.ubuntu\.com\/ubuntu\//g' /etc/apt/sources.list
sudo apt-get update


To

sudo sed -i 's/http:\/\/archive\.ubuntu\.com\/ubuntu\//http:\/\/azure\.archive\.ubuntu\.com\/ubuntu\//g' /etc/apt/sources.list
sudo sed -i 's/http:\/\/[a-z][a-z]\.archive\.ubuntu\.com\/ubuntu\//http:\/\/azure\.archive\.ubuntu\.com\/ubuntu\//g' /etc/apt/sources.list
sudo sed -i 's/http:\/\/security\.ubuntu\.com\/ubuntu\//http:\/\/azure\.archive\.ubuntu\.com\/ubuntu\//g' /etc/apt/sources.list
sudo sed -i 's/http:\/\/[a-z][a-z]\.security\.ubuntu\.com\/ubuntu\//http:\/\/azure\.archive\.ubuntu\.com\/ubuntu\//g' /etc/apt/sources.list
sudo apt-get update

Author: AjayBathini-MSFT

articles/virtual-machines/linux/create-upload-ubuntu.md

@@ -54,6 +54,8 @@ This article assumes that you've already installed an Ubuntu Linux operating sys
     ```bash
      sudo sed -i 's/http:\/\/archive\.ubuntu\.com\/ubuntu\//http:\/\/azure\.archive\.ubuntu\.com\/ubuntu\//g' /etc/apt/sources.list
      sudo sed -i 's/http:\/\/[a-z][a-z]\.archive\.ubuntu\.com\/ubuntu\//http:\/\/azure\.archive\.ubuntu\.com\/ubuntu\//g' /etc/apt/sources.list
+     sudo sed -i 's/http:\/\/security\.ubuntu\.com\/ubuntu\//http:\/\/azure\.archive\.ubuntu\.com\/ubuntu\//g' /etc/apt/sources.list
+     sudo sed -i 's/http:\/\/[a-z][a-z]\.security\.ubuntu\.com\/ubuntu\//http:\/\/azure\.archive\.ubuntu\.com\/ubuntu\//g' /etc/apt/sources.list
      sudo apt-get update
     ```