Fix two copy+pastos.

Author: sunfishcode

library/std/src/os/fd/raw.rs

@@ -31,7 +31,7 @@ pub trait AsRawFd {
     /// destroyed.
     ///
     /// However, borrowing is not strictly required. See [`AsFd::as_fd`]
-    /// for an API which strictly borrows a handle.
+    /// for an API which strictly borrows a file descriptor.
     ///
     /// # Example
     ///

library/std/src/os/windows/io/raw.rs

@@ -186,7 +186,7 @@ pub trait FromRawSocket {
     ///
     /// The `socket` passed in must:
     ///   - be a valid an open socket,
-    ///   - be a handle for a resource that may be freed via [`closesocket`].
+    ///   - be a socket that may be freed via [`closesocket`].
     ///
     /// [`closesocket`]: https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-closesocket
     #[stable(feature = "from_raw_os", since = "1.1.0")]