fix missing solution end

mmcky · mmcky · commit 3a1aba2534ac · 2025-05-15T12:23:37.000+10:00
diff --git a/lectures/pandas_panel.md b/lectures/pandas_panel.md
@@ -615,3 +615,6 @@ plt.title('Employment in Europe (2015)')
 plt.legend(bbox_to_anchor=(1,0.5))
 plt.show()
 ```
+
+```{solution-end}
+ ```
