Tweak docs

Author: newpavlov

src/lib.rs

@@ -41,7 +41,7 @@
 //! | Backend name      | Target               | Target Triple        | Implementation
 //! | ----------------- | -------------------- | -------------------- | --------------
 //! | `linux_getrandom` | Linux, Android       | `*‑linux‑*`          | [`getrandom`][1] system call (without `/dev/urandom` fallback). Bumps minimum supported Linux kernel version to 3.17 and Android API level to 23 (Marshmallow).
-//! | `linux_rustix`    | Linux, Android       | `*‑linux‑*`          | [`getrandom`][1] system call using the [`rustix`] crate
+//! | `linux_rustix`    | Linux, Android       | `*‑linux‑*`          | Same as `linux_getrandom`, but uses [`rustix`] instead of `libc`.
 //! | `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!