Add mlflow-yarn backend to the doc (#3373)
Add mlflow-yarn backend to the doc (#3373)

Signed-off-by: Fabian Höring <4c5de415aacb08e3caa718cf4b267dee3e680452@criteo.com>
mlflow/mlflow,mlflow/mlflow,mlflow/mlflow,mlflow/mlflow,mlflow/mlflow,mlflow/mlflow,mlflow/mlflow