populate the pubspec repository field

pkgs/source_maps/CHANGELOG.md

diff --git a/pkgs/source_maps/CHANGELOG.md b/pkgs/source_maps/CHANGELOG.md
index 366dce2..dcd0400 100644
--- a/pkgs/source_maps/CHANGELOG.md
+++ b/pkgs/source_maps/CHANGELOG.md
@@ -1,5 +1,8 @@
 # 0.10.11-dev
 
+- Switch to `package:lints`.
+- Populate the pubspec `repository` field.
+
 ## 0.10.10
 
 * Stable release for null safety.

pkgs/source_maps/README.md

diff --git a/pkgs/source_maps/README.md b/pkgs/source_maps/README.md
index 5c7f638..89e9eff 100644
--- a/pkgs/source_maps/README.md
+++ b/pkgs/source_maps/README.md
@@ -1,5 +1,6 @@
-Source Maps
-===========
+[![Dart CI](https://github.com/dart-lang/source_maps/actions/workflows/test-package.yml/badge.svg)](https://github.com/dart-lang/source_maps/actions/workflows/test-package.yml)
+[![pub package](https://img.shields.io/pub/v/source_maps.svg)](https://pub.dev/packages/source_maps)
+[![package publisher](https://img.shields.io/pub/publisher/source_maps.svg)](https://pub.dev/packages/source_maps/publisher)
 
 This project implements a Dart pub package to work with source maps. The
 implementation is based on the [source map version 3 spec][spec] which was

pkgs/source_maps/pubspec.yaml

diff --git a/pkgs/source_maps/pubspec.yaml b/pkgs/source_maps/pubspec.yaml
index 23e53a5..b1cb177 100644
--- a/pkgs/source_maps/pubspec.yaml
+++ b/pkgs/source_maps/pubspec.yaml
@@ -1,8 +1,7 @@
 name: source_maps
 version: 0.10.11-dev
-
 description: Library to programmatically manipulate source map files.
-homepage: https://github.com/dart-lang/source_maps
+repository: https://github.com/dart-lang/source_maps
 
 environment:
   sdk: ">=2.12.0 <3.0.0"