chore: update packaging metadata (#8307)

## Summary

Tiny updates on packaging metadata:
- mention code formatting in description
- link to changelog instead of releases, now that a changelog file
exists and updated on each release

pyproject.toml

@@ -5,7 +5,7 @@ build-backend = "maturin"
 [project]
 name = "ruff"
 version = "0.1.3"
-description = "An extremely fast Python linter, written in Rust."
+description = "An extremely fast Python linter and code formatter, written in Rust."
 authors = [{ name = "Astral Software Inc.", email = "[email protected]" }]
 readme = "README.md"
 requires-python = ">=3.7"
@@ -40,7 +40,7 @@ classifiers = [
 [project.urls]
 Repository = "https://github.com/astral-sh/ruff"
 Documentation = "https://docs.astral.sh/ruff/"
-Changelog = "https://github.com/astral-sh/ruff/releases"
+Changelog = "https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md"
 
 [tool.maturin]
 bindings = "bin"