refactor: link homepage to The Cargo Book for main cargo crate

Author: weihanglo

Cargo.toml

@@ -128,7 +128,7 @@ version = "0.77.0"
 edition.workspace = true
 license.workspace = true
 rust-version.workspace = true
-homepage = "https://crates.io"
+homepage = "https://doc.rust-lang.org/cargo/index.html"
 repository.workspace = true
 documentation = "https://docs.rs/cargo"
 description = """