Missing Await In Async Similarity_search Example In QdrantVectorStore Docstring

The example code in the docstring omitted the await keyword for the asynchronous method asimilarity_search, leading to incorrect usage that returns a coroutine instead of executed results.

1. Copy the example code from the QdrantVectorStore docstring: ```python from langchain_qdrant import QdrantVectorStore # assume vector_store is already initialized results = vector_store.asimilarity_search(query="thud", k=1) print(results) ``` 2. Run the code. Observe that the output is a coroutine object, not a list of documents.

Add the await keyword before the asynchronous call to asimilarity_search to properly execute the coroutine and obtain the results. The example is wrapped in an async function and executed with asyncio.run to provide a complete, runnable snippet.

Users who copy this fix must ensure they are inside an asynchronous context (async def). If the await is used outside an async function, a SyntaxError will occur. Also, different versions of langchain-qdrant may have slightly different APIs; verify that asimilarity_search exists in the installed version. To roll back, simply revert the docstring change or the user's code to the previous version.