bindings.javascript : update test instructions [no ci] (#2951)
This commit updates the instructions for running the test in the
JavaScript bindings README file.
The motivation for this is for Node.js versions after v16.4.0 the
`--experimental-wasm-threads` and `--experimental-wasm-simd` flags are
no longer required and they generate the following errors:
```console
$ node --experimental-wasm-threads --experimental-wasm-simd ../tests/test-whisper.js
node: bad option: --experimental-wasm-threads
node: bad option: --experimental-wasm-simd
```
overview / pkg / ggml / sources / whisper.cpp / commit