Fix links for std::process::Child{Stdin, Stdout, Stderr}

Author: Lireer

RELEASES.md

@@ -47,8 +47,8 @@ Stabilized APIs
 - [`core::num::Saturating`](https://doc.rust-lang.org/stable/std/num/struct.Saturating.html)
 - [`impl From<io::Stdout> for std::process::Stdio`](https://doc.rust-lang.org/stable/std/process/struct.Stdio.html#impl-From%3CStdout%3E-for-Stdio)
 - [`impl From<io::Stderr> for std::process::Stdio`](https://doc.rust-lang.org/stable/std/process/struct.Stdio.html#impl-From%3CStderr%3E-for-Stdio)
-- [`impl From<OwnedHandle> for std::process::Child{Stdin, Stdout, Stderr}`](https://doc.rust-lang.org/stable/std/process/struct.Stdio.html#impl-From%3CStderr%3E-for-Stdio)
-- [`impl From<OwnedFd> for std::process::Child{Stdin, Stdout, Stderr}`](https://doc.rust-lang.org/stable/std/process/struct.Stdio.html#impl-From%3CStderr%3E-for-Stdio)
+- [`impl From<OwnedHandle> for std::process::Child{Stdin, Stdout, Stderr}`](https://doc.rust-lang.org/stable/std/process/struct.ChildStderr.html#impl-From%3COwnedHandle%3E-for-ChildStderr)
+- [`impl From<OwnedFd> for std::process::Child{Stdin, Stdout, Stderr}`](https://doc.rust-lang.org/stable/std/process/struct.ChildStderr.html#impl-From%3COwnedFd%3E-for-ChildStderr)
 - [`std::ffi::OsString::from_encoded_bytes_unchecked`](https://doc.rust-lang.org/stable/std/ffi/struct.OsString.html#method.from_encoded_bytes_unchecked)
 - [`std::ffi::OsString::into_encoded_bytes`](https://doc.rust-lang.org/stable/std/ffi/struct.OsString.html#method.into_encoded_bytes)
 - [`std::ffi::OsStr::from_encoded_bytes_unchecked`](https://doc.rust-lang.org/stable/std/ffi/struct.OsStr.html#method.from_encoded_bytes_unchecked)