docs: update integration docs for openai embeddings (#25249)
Related issue: https://github.com/langchain-ai/langchain/issues/24856
```json
{
"provider": "openai",
"js": true,
"local": false,
"serializable": false,
"async_native": true
}
```
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Co-authored-by: Isaac Francisco <78627776+isahers1@users.noreply.github.com>
Co-authored-by: isaac hershenson <ihershenson@hmc.edu>
