message: Add bench fix to changelog
diff: @@ -6,6 +6,7 @@ Blocks of changes will separated by version increments.
  ## **[Unreleased]**
  +- [#829](https://github.com/wasmerio/wasmer/pull/829) Fix deps on `make bench-*` commands; benchmarks don't compile other backends now
  - [#807](https://github.com/wasmerio/wasmer/pull/807) Implement Send for `Instance`, breaking change on `ImportObject`, remove method `get_namespace` replaced with `with_namespace` and `maybe_with_namespace`
  - [#817](https://github.com/wasmerio/wasmer/pull/817) Add document for tracking features across backends and language integrations, [docs/feature_matrix.md]
  - [#823](https://github.com/wasmerio/wasmer/issues/823) Improved Emscripten / WASI integration
  