style: fix linting in plotting/__init__.py by adding noqa

Author: mariam851

mlxtend/plotting/__init__.py

@@ -7,6 +7,7 @@
 
 from .checkerboard import checkerboard_plot
 from .decision_regions import plot_decision_regions
+from .decision_regions_3d import plot_decision_regions_3d
 from .ecdf import ecdf
 from .enrichment_plot import enrichment_plot
 from .heatmap import heatmap
@@ -20,7 +21,6 @@
 from .scatter_hist import scatter_hist
 from .scatterplotmatrix import scatterplotmatrix
 from .stacked_barplot import stacked_barplot
-from .decision_regions_3d import plot_decision_regions_3d
 
 __all__ = [
     "plot_learning_curves",