chore: fix doc.rs build failure

https://docs.rs/crate/oxc_resolver/11.8.4/builds/2542617

```
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]   --> src/lib.rs:42:29
[INFO] [stderr]    |
[INFO] [stderr] 42 | #![cfg_attr(docsrs, feature(doc_auto_cfg))]
[INFO] [stderr]    |                             ^^^^^^^^^^^^ feature has been removed
[INFO] [stderr]    |
[INFO] [stderr]    = note: removed in 1.58.0; see <rust-lang/rust#138907> for more information
[INFO] [stderr]    = note: merged into `doc_cfg`
[INFO] [stderr]
[INFO] [stderr] error: Compilation failed, aborting rustdoc
```

Author: Boshen

src/lib.rs

@@ -39,7 +39,6 @@
 //!
 //! ## Feature flags
 #![cfg_attr(feature = "document-features", doc = document_features::document_features!())]
-#![cfg_attr(docsrs, feature(doc_auto_cfg))]
 //!
 //! ## Example
 //!