Add artwork attribution

app.py

@@ -44,6 +44,11 @@ app_ui = x.ui.page_fillable(
         ),
         ui.output_ui("value_boxes"),
         x.ui.output_plot("scatter", fill=True),
+        ui.help_text(
+            "Artwork by ",
+            ui.a("@allison_horst", href="https://twitter.com/allison_horst"),
+            class_="text-end",
+        ),
         fill=True,
         fillable=True,
     ),