Example for AzureOpenAI is broken

[cosmin-novac]

Describe the bug
The example on this page no longer works with the current RAGAS build: https://docs.ragas.io/en/latest/howtos/customisations/embeddings.html#evaluating-with-azure-open-ai-embeddings

For example, from ragas.llms import LangchainLLM doesnt exist anymore. Should this be replaced with from ragas.llms.base import LangchainLLMWrapper ?