py: fix some links

Author: gadenbuie

pkg-py/CHANGELOG.md

@@ -0,0 +1,9 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+

pyproject.toml

@@ -18,7 +18,7 @@ authors = [
 
 [project.urls]
 Homepage = "https://posit-dev.github.io/shinychat/"
-Documentation = "https://posit-dev.github.io/shinychat/pkg/py/"
+Documentation = "https://posit-dev.github.io/shinychat/py/"
 Repository = "https://github.com/posit-dev/shinychat"
 Issues = "https://github.com/posit-dev/shinychat/issues/"
 Changelog = "https://github.com/posit-dev/shinychat/blob/main/pkg-py/CHANGELOG.md"