langchain

72a0f425 - docs(docs): correct package name from langchain-google_vertexai to langchain-google-vertexai for VertexAILLM (#32095)

docs(docs): correct package name from langchain-google_vertexai to langchain-google-vertexai for VertexAILLM (#32095) - **Description:** This PR updates the `package` field for the VertexAI integration in the documentation metadata. The original value was `langchain-google_vertexai`, which has been corrected to `langchain-google-vertexai` to reflect the actual package name used in PyPI and LangChain integrations. - **Issue:** N/A - **Dependencies:** None - **Twitter handle:** N/A