doc(vector): update Ollama endpoint

[Guikingone]

Hi 👋🏻

As stated in the official Ollama documentation, the endpoint is /api/embed and not /api/embeddings.

Doc: https://github.com/ollama/ollama/blob/main/docs/api.md#generate-embeddings

Pull Request

Related issue

Fixes #<issue_number>

What does this PR do?

Update on the embeddings endpoints for Ollama

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[guimachiavelli]

Thanks for the contribution, @Guikingone, it's much appreciated.

Looks good to me as it does match their documentation, but I'm requesting a review from one of our devs just to be sure and in case this is interesting for them to know.

[guimachiavelli]

Seems like this was also reported on the engine repo and is actually a possible breaking change of Ollama's API.

I'll delay merging until the devs have had a chance to do some research and decide the best course of action.