use quarto, not Pluto to render pages

quarto/_freeze/index/execute-results/html.json

@@ -0,0 +1,11 @@
+{
+  "hash": "2267a11c0e326b9f4239cd308203e750",
+  "result": {
+    "markdown": "# Preface {.unnumbered}\n\n::: {.cell execution_count=1}\n\n::: {.cell-output .cell-output-stderr}\n```\n┌ Info: Precompiling QuizQuestions [612c44de-1021-4a21-84fb-7261cf5eb2d4]\n└ @ Base loading.jl:1423\n```\n:::\n:::\n\n\nXXX replace here XXX\n\nThis is a Quarto book.\n\nTo learn more about Quarto books visit <https://quarto.org/docs/books>.\n\n",
+    "supporting": [
+      "index_files"
+    ],
+    "filters": [],
+    "includes": {}
+  }
+}