docs: sorting `Examples using ...` section (#17588)
The API Reference docs. If the class has a long list of the examples
that works with this class, then the `Examples using` list is [hard to
comprehend](https://api.python.langchain.com/en/latest/llms/langchain_community.llms.openai.OpenAI.html#langchain-community-llms-openai-openai).
If this list is sorted it would be much easier.
- sorting the `Examples using <ClassName>` list
