Rollup merge of #122378 - clubby789:rustbook-rebuild, r=onur-ozkan

Properly rebuild rustbooks

Fixes #122367

If the book was out of date but the tool was up to date, this would evaluate to `!(false || true)` == `!true` == `false` and not rebuild.

Author: workingjubilee

src/bootstrap/src/core/build_steps/doc.rs

@@ -145,7 +145,8 @@ impl<P: Step> Step for RustbookSrc<P> {
         let rustbook = builder.tool_exe(Tool::Rustbook);
         let mut rustbook_cmd = builder.tool_cmd(Tool::Rustbook);
 
-        if !builder.config.dry_run() && !(up_to_date(&src, &index) || up_to_date(&rustbook, &index))
+        if !builder.config.dry_run()
+            && (!up_to_date(&src, &index) || !up_to_date(&rustbook, &index))
         {
             builder.info(&format!("Rustbook ({target}) - {name}"));
             let _ = fs::remove_dir_all(&out);