Fix broken WASI ABI link
The file has been moved.
@@ -572,7 +572,7 @@ impl<T> Linker<T> {
/// Ordinary modules which don't declare themselves to be either Commands
/// or Reactors are treated as Reactors without any initialization calls.
///
- /// [Commands and Reactors]: https://github.com/WebAssembly/WASI/blob/master/design/application-abi.md#current-unstable-abi
+ /// [Commands and Reactors]: https://github.com/WebAssembly/WASI/blob/main/legacy/application-abi.md#current-unstable-abi
///
/// # Errors
///
