[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

deepmd/pt/optimizer/LKF.py

@@ -32,11 +32,7 @@ def __init__(
         kalman_nue=0.9987,
         block_size=5120,
     ):
-        defaults = {
-            "lr":0.1,
-            "kalman_nue":kalman_nue,
-            "block_size":block_size
-        }
+        defaults = {"lr": 0.1, "kalman_nue": kalman_nue, "block_size": block_size}
 
         super().__init__(params, defaults)