Fix repository link (#18)

Author: newpavlov

Cargo.toml

@@ -4,7 +4,7 @@ version = "0.10.0-rc-2"
 authors = ["The Rand Project Developers", "The Rust Project Developers"]
 license = "MIT OR Apache-2.0"
 readme = "README.md"
-repository = "https://github.com/rust-random/rand"
+repository = "https://github.com/rust-random/rand_core"
 documentation = "https://docs.rs/rand_core"
 homepage = "https://rust-random.github.io/book"
 description = """

README.md

@@ -1,6 +1,6 @@
 # rand_core
 
-[![Test Status](https://github.com/rust-random/rand/actions/workflows/test.yml/badge.svg?event=push)](https://github.com/rust-random/rand/actions)
+[![Test Status](https://github.com/rust-random/rand_core/actions/workflows/test.yml/badge.svg?event=push)](https://github.com/rust-random/rand_core/actions)
 [![Latest version](https://img.shields.io/crates/v/rand_core.svg)](https://crates.io/crates/rand_core)
 [![Book](https://img.shields.io/badge/book-master-yellow.svg)](https://rust-random.github.io/book/)
 [![API](https://img.shields.io/badge/api-master-yellow.svg)](https://rust-random.github.io/rand/rand_core)