Fix errors in inference API Llama Service examples

[lcawl]

Relates to #5020

This PR addresses the following errors that were returned by the make transform-to-openapi-for-docs command and seem to have been caused by missing commas in the examples:

specification/inference/put_llama/examples/request/PutLlamaRequestExample3.yaml: Error: body cannot be parsed
specification/inference/put_llama/examples/request/PutLlamaRequestExample2.yaml: Error: body cannot be parsed
specification/inference/put_llama/examples/request/PutLlamaRequestExample1.yaml: Error: body cannot be parsed

[github-actions]

Following you can find the validation changes against the target branch for the APIs.

No changes detected.

You can validate these APIs yourself by using the make validate target.