add collapse and comment chunck as in template

analyses/simulate_transmission/epidemics_odin_interop.qmd

@@ -11,6 +11,13 @@ toc: true
 toc_float: true
 ---
 
+```{r, include = FALSE}
+knitr::opts_chunk$set(
+  collapse = TRUE,
+  comment = "#>"
+)
+```
+
 ## Ingredients
 
 This guide shows how to use some of the convenient features of _epidemics_, especially the classes that describe populations, interventions, and vaccination regimes, with models that are generated by _odin_.