Fix with black 24.1.1. (#10014)

demo/rmm_plugin/rmm_mgpu_with_dask.py

@@ -2,6 +2,7 @@
 Using rmm with Dask
 ===================
 """
+
 import dask
 from dask.distributed import Client
 from dask_cuda import LocalCUDACluster

demo/rmm_plugin/rmm_singlegpu.py

@@ -2,6 +2,7 @@
 Using rmm on a single node device
 =================================
 """
+
 import rmm
 from sklearn.datasets import make_classification