fix typo in code-block kind specifier

KisaragiEffective · web-flow · commit 9f95e7622d32 · 2022-03-16T10:19:19.000+09:00
diff --git a/clippy_lints/src/collapsible_if.rs b/clippy_lints/src/collapsible_if.rs
@@ -76,7 +76,7 @@ declare_clippy_lint! {
     ///
     /// Should be written:
     ///
-    /// ```rust.ignore
+    /// ```rust,ignore
     /// if x {
     ///     …
     /// } else if y {
