Specify std:fs::rename in relnotes

Author: cuviper

RELEASES.md

@@ -5,7 +5,7 @@ Version 1.85.1 (2025-03-18)
 
 - [Fix the doctest-merging feature of the 2024 Edition.](https://github.com/rust-lang/rust/pull/137899/)
 - [Relax some `target_feature` checks when generating docs.](https://github.com/rust-lang/rust/pull/137632/)
-- [Fix errors in `fs::rename` on Windows 1607.](https://github.com/rust-lang/rust/pull/137528/)
+- [Fix errors in `std::fs::rename` on Windows 1607.](https://github.com/rust-lang/rust/pull/137528/)
 - [Downgrade bootstrap `cc` to fix custom targets.](https://github.com/rust-lang/rust/pull/137460/)
 - [Skip submodule updates when building Rust from a source tarball.](https://github.com/rust-lang/rust/pull/137338/)