Apply suggestions from code review

Co-Authored-By: Joel Ostblom <joelostblom@users.noreply.github.com>

Author: nicolaskruchten

packages/python/plotly/_plotly_utils/colors/_swatches.py

@@ -2,13 +2,11 @@ def _swatches(module_names, module_contents, template=None):
     """
     Parameters
     ----------
-
     template : str or dict or plotly.graph_objects.layout.Template instance
         The figure template name or definition.
 
     Returns
     -------
-
     fig : graph_objects.Figure containing the displayed image
         A `Figure` object. This figure demonstrates the color scales and
         sequences in this module, as stacked bar charts.