Worked on improving the documentation for the Elasticsearch retriever integration in the langchain-ai/langchain repository, focusing on enhancing clarity for new developers. Addressed a documentation typo in the Jupyter Notebook file and provided clearer guidance on customizing the document mapper function, aiming to reduce onboarding friction for contributors. All updates were consolidated into a single, traceable commit to maintain transparency in the change history. The work primarily involved technical writing and documentation skills, with a focus on Jupyter Notebook as the primary language. No new features were added, but the contribution improved the overall usability and maintainability of the integration documentation.