Update source URL

Author: esadek

pyproject.toml

@@ -37,7 +37,7 @@ maintainers = [{name = "DuckDB Foundation"}]
 
 [project.urls]
 Documentation = "https://duckdb.org/docs/stable/clients/python/overview"
-Source = "https://github.com/duckdb/duckdb/blob/main/tools/pythonpkg"
+Source = "https://github.com/duckdb/duckdb-python"
 Issues = "https://github.com/duckdb/duckdb-python/issues"
 Changelog = "https://github.com/duckdb/duckdb/releases"