(ForumsTeam) fixes MicrosoftDocs/azure-docs#32807

Corrected the image urn

Author: Karishma-Tiwari-MSFT

articles/virtual-machines/linux/using-cloud-init.md

@@ -75,7 +75,7 @@ The following example creates a VM named *centos74* and creates SSH keys if they
 az vm create \
   --resource-group myResourceGroup \
   --name centos74 \
-  --image OpenLogic:CentOS:7-CI:latest \
+  --image OpenLogic:CentOS-CI:7-CI:latest \
   --custom-data cloud-init.txt \
   --generate-ssh-keys 
 ```