Update sympy.ipynb

Tom-van-Woudenberg · Tom-van-Woudenberg · commit 0cc15c24f03d · 2025-03-24T14:08:33.000+01:00
diff --git a/book/08/sympy.ipynb b/book/08/sympy.ipynb
@@ -43,9 +43,11 @@
    "source": [
     "# SymPy\n",
     "\n",
-    "```{sidebar} Author and external content\n",
+    "```{admonition} Attribution\n",
+    ":class: attribution\n",
+    " \n",
     "Written by Tom van Woudenberg\n",
-    "\n",
+    " \n",
     "This page reuses CC BY content from {cite:t}`sympy`. {fa}`quote-left`[Find out more here](external_resources)`\n",
     "```\n",
     "\n",
