Clarify code block structure in KubeVirt blog post

[Copilot]

Addressed reviewer question about code block formatting in the VMI deployment section.

Changes:

• Confirmed YAML code block (lines 95-133) has proper closing backticks
• Verified bash code block (lines 137-139) is correctly separated as independent block
• No structural changes needed - existing formatting is correct

The structure properly separates the VMI YAML definition from the deployment command:

1. Create your VMI...
   ```yaml
   apiVersion: kubevirt.io/v1
   ...

1. Deploy the VMI...

   kubectl apply -f vmi-fedora.yaml

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