fix lint error

Author: Emilgardis

src/lib.rs

@@ -1,5 +1,6 @@
-#![allow(unknown_lints)] // remove once broken_intra_doc_links is on stable
-#![deny(missing_docs, broken_intra_doc_links)]
+#![allow(unknown_lints, renamed_and_removed_lints)]
+#![deny(missing_docs, broken_intra_doc_links)] // This will be weird until 1.52, see https://github.com/rust-lang/rust/pull/80527
+#![cfg_attr(nightly, deny(rustdoc::broken_intra_doc_links))]
 #![cfg_attr(nightly, feature(doc_cfg, doc_spotlight))]
 #![doc(html_root_url = "https://docs.rs/twitch_api2/0.4.1")]
 #![cfg_attr(all(nightly, doctest), feature(external_doc))]