Update 08-vcr-usage.Rmd

Co-authored-by: Maëlle Salmon <[email protected]>

08-vcr-usage.Rmd

@@ -50,7 +50,7 @@ This also works with `httr`. The only difference is that you write to disk
 with a function `httr::write_disk(path)` rather than a parameter.
 
 ::: {.alert .alert-dismissible .alert-info}
-Writing to disk with `{httr2}` does not yet work with `{vcr}` - see <https://github.com/ropensci/vcr/issues/270>
+Writing to disk with `{httr2}` does not yet work with `{vcr}` -- see <https://github.com/ropensci/vcr/issues/270>
 :::
 
 Note that when you write to disk when using `vcr`, the cassette is slightly