update to new arviz functions (#116)

Author: aloctavodia

Chapters/Case_study_model_comparison.qmd

@@ -1,17 +1,5 @@
----
-title: Model Comparison (case study)
-jupyter:
-  jupytext:
-    text_representation:
-      extension: .qmd
-      format_name: quarto
-      format_version: '1.0'
-      jupytext_version: 1.16.0
-  kernelspec:
-    display_name: Python 3 (ipykernel)
-    language: python
-    name: python3
----
+# Model Comparison (case study) {#sec-model-comparison-case-study}
+
 
 ```{python}
 #| echo: false