Update comments/example to reflect debounce default of 1s

NEWS.md

@@ -1,7 +1,9 @@
 # learnr (development version)
 
--   Added a new option, `tutorial.exercise.debounce`, to slow down successive exercise execution. This option should be set to the number of seconds a user will have to wait before their next code execution is performed. (@internaut, #818)
+-   Added a new option, `tutorial.exercise.debounce`, to slow down successive exercise execution. This option should be set to the number of seconds a user will have to wait before their next code execution is performed. The option defaults to 1 second to deter rapid code executions. To disable this behavior, call `options(tutorial.exercise.debounce = 0)` within your setup chunk. (@internaut, #818)
+
 -   Removed dependency on ellipsis (@olivroy, #809)
+
 -   Added Norwegian translation contributed by @jonovik. (#806)
 
 # learnr 0.11.5

pkgdown/assets/snippets/exercisedebounce.md

@@ -1,2 +1,2 @@
-# Set exercise submission debounce time to 1 second
-options("tutorial.exercise.debounce" = 1)
+# Set exercise submission debounce time to 5 seconds
+options("tutorial.exercise.debounce" = 5)

pkgdown/assets/snippets/exercisedebounceoff.md

@@ -0,0 +1,2 @@
+# Disable exercise submission debounce
+options("tutorial.exercise.debounce" = 0)

vignettes/articles/exercises.Rmd

@@ -80,12 +80,18 @@ This option can also be set either globally or per-chunk:
 insert_snippet("exerciseeval")
 ```
 
-It may be necessary to slow down successive exercise submissions, otherwise users may overwhelm your server by running exercise code chunks in fast repetition. You can do so globally by setting the option `tutorial.exercise.debounce` to an amount of time (in seconds) that is waited before the same user's next code execution is performed:
+It may be necessary to slow down successive exercise submissions, otherwise users may overwhelm your server by running exercise code chunks in fast repetition. You can do so globally by setting the option `tutorial.exercise.debounce` to an amount of time (in seconds) that is waited before the same user's next code execution is performed. This option is set to 1 second by default.
 
 ```{r snippet-exercisedebounce, echo = FALSE}
 insert_snippet("exercisedebounce")
 ```
 
+To disable of this behavior, you can set the option to 0:
+
+```{r snippet-exercisedebounceoff, echo = FALSE}
+insert_snippet("exercisedebounceoff")
+```
+
 ## Exercise Setup {#exercise-setup}
 
 Code chunks with `exercise=TRUE` are evaluated within standalone environments.