update the code format and SpringAI version

[wstever]

Describe what this PR does / why we need it

update the example of ollama

Does this pull request fix one issue?

NONE

Describe how you did it

update the code format and SpringAI version

Describe how to verify it

run it locally

Special notes for reviews

update the code format and SpringAI version

[CLAassistant]

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1 out of 2 committers have signed the CLA.

✅ wstever
❌ Shitian.Wen

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[chickenlj]

LGTM.