Fix Apt Error for Google Repository

See https://askubuntu.com/questions/724093/no-more-updates-for-google-chrome-apt-get-update-error

webgoat-images/vagrant_provision.sh

@@ -14,7 +14,7 @@ sudo apt-get install -y -q build-essential autotools-dev automake pkg-config exp
 
 ## Chrome
 wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add -
-sudo sh -c 'echo "deb http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list'
+sudo sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list'
 sudo apt-get update
 sudo apt-get install -y google-chrome-stable