Update README.md

Co-authored-by: daxpedda <[email protected]>

README.md

@@ -83,7 +83,7 @@ of randomness based on their specific needs:
 | `rdrand`          | x86, x86-64          | `x86_64-*`, `i686-*`     | [`RDRAND`] instruction
 | `rndr`            | AArch64              | `aarch64-*`              | [`RNDR`] register
 | `esp_idf`         | ESP-IDF              | `*‑espidf`               | [`esp_fill_random`]. WARNING: can return low-quality entropy without proper hardware configuration!
-| `wasm_js`         | Web Browser, Node.js | `wasm32‑unknown‑unknown`, `wasm32v1-none` | [`Crypto.getRandomValues`] if available, then [`crypto.randomFillSync`] if on Node.js (see [WebAssembly support])
+| `wasm_js`         | Web Browser, Node.js | `wasm32‑unknown‑unknown`, `wasm32v1-none` | [`Crypto.getRandomValues`]
 | `custom`          | All targets          | `*`                      | User-provided custom implementation (see [custom backend])
 
 Opt-in backends can be enabled using the `getrandom_backend` configuration flag.