modified embeddings return annotation

ollama/_client.py

@@ -194,7 +194,7 @@ class Client(BaseClient):
     prompt: str = '',
     options: Optional[Options] = None,
     keep_alive: Optional[Union[float, str]] = None,
-  ) -> Sequence[float]:
+  ) -> Mapping[str, Sequence[float]]:
     return self._request(
       'POST',
       '/api/embeddings',