code: def update_font(self):
          
          color_scheme = self.get_color_scheme()
          font = self.get_plugin_font()
          rich_font = self.get_plugin_font(rich_text=True)
  
          self.set_plain_text_font(font, color_scheme=color_scheme)
          self.set_rich_text_font(rich_font)
docs: Update font from Preferences