format

Author: liwagu

src/bootstrap/src/core/build_steps/tool.rs

@@ -582,10 +582,7 @@ impl Step for Rustdoc {
             )
             .unwrap();
 
-            let dirs = vec![
-                PathBuf::from("src/librustdoc"),
-                PathBuf::from("src/tools/rustdoc"),
-            ];
+            let dirs = vec![PathBuf::from("src/librustdoc"), PathBuf::from("src/tools/rustdoc")];
 
             if let Some(false) = builder.config.check_for_changes(&dirs, &commit, "rustdoc", true) {
                 let precompiled_rustdoc = builder