changed parameter from a integer to a float (#3543)
changed parameter from a integer to a float (#3543)

mlflow run https://github.com/mlflow/mlflow-example.git -P alpha=5
to
mlflow run https://github.com/mlflow/mlflow-example.git -P alpha=5.0

Signed-off-by: Dongwon Yoon <2bed64b9009034c7d8617d2ea58929f25c2cde7d@pubg.com>
mlflow/mlflow,mlflow/mlflow,mlflow/mlflow,mlflow/mlflow,mlflow/mlflow,mlflow/mlflow,mlflow/mlflow