Mark `io_extras` module as no-export (matching its `doc(hidden)`)

diff --git a/lightning/src/lib.rs b/lightning/src/lib.rs
index ad51dbe18b7830507e5dd0a698bb67fc2000d153..b8e25db0b5046327186083d63ce15a042b0b5bf0 100644 (file)
--- a/lightning/src/lib.rs
+++ b/lightning/src/lib.rs
@@ -95,7 +95,9 @@ pub use core2::io;
 
 #[cfg(not(feature = "std"))]
 #[doc(hidden)]
-/// IO utilities public only for use by in-crate macros. These should not be used externally
+/// IO utilities public only for use by in-crate macros. These should not be used externally.
+///
+/// This is not exported to bindings users as its not intended for public consumption.
 pub mod io_extras {
        use core2::io::{self, Read, Write};