fix linebreak

Author: c-w-feldmann

molpipeline/experimental/explainability/visualization/heatmaps.py

@@ -183,9 +183,7 @@ def __init__(
         y_res: int
             Resolution (number of cells) along y-axis.
         function_list: list[\
-         Callable[\
-            [npt.NDArray[np.float64]],\
-            npt.NDArray[np.float64]],\
+            Callable[[npt.NDArray[np.float64]], npt.NDArray[np.float64]],\
         ], optional
             List of functions to be evaluated for each cell, by default None.