Fixed hover background color issue on Translation Guide for Python Packaging Guide

Author: hfactor13

_ext/translation_graph.py

@@ -146,6 +146,7 @@ def run(self):
  fig.update_layout(
  paper_bgcolor="rgba(0,0,0,0)",
  plot_bgcolor="rgba(0,0,0,0)",
+ hoverlabel=dict(bgcolor="white"),
  font_color="var(--bs-body-color)",
  margin=dict(l=40, r=40, t=40, b=40),
  xaxis_showgrid=False,