use dummy value for codeblock language
@@ -1011,7 +1011,7 @@ impl Extender {
///
/// Returns extensions that should be added to `new_extensions` before
/// extending selectors in order to properly handle extension loops such as:
- ///```no_run
+ ///```foo
/// .c {x: y; @extend .a}
/// .x.y.a {@extend .b}
/// .z.b {@extend .c}
