Rollup merge of rust-lang#98739 - euclio:useless-comment-plural, r=Dylan-DPC

fix grammar in useless doc comment lint

Author: Dylan-DPC

compiler/rustc_lint/src/builtin.rs

@@ -1098,12 +1098,12 @@ impl EarlyLintPass for UnusedDocComment {
     }
 
     fn check_block(&mut self, cx: &EarlyContext<'_>, block: &ast::Block) {
-        warn_if_doc(cx, block.span, "block", &block.attrs());
+        warn_if_doc(cx, block.span, "blocks", &block.attrs());
     }
 
     fn check_item(&mut self, cx: &EarlyContext<'_>, item: &ast::Item) {
         if let ast::ItemKind::ForeignMod(_) = item.kind {
-            warn_if_doc(cx, item.span, "extern block", &item.attrs);
+            warn_if_doc(cx, item.span, "extern blocks", &item.attrs);
         }
     }
 }

src/test/ui/lint/unused/unused-doc-comments-edge-cases.stderr

@@ -71,7 +71,7 @@ LL |
 LL | / extern "C" {
 LL | |     fn foo();
 LL | | }
-   | |_- rustdoc does not generate documentation for extern block
+   | |_- rustdoc does not generate documentation for extern blocks
    |
    = help: use `//` for a plain comment