Fix outdated links across a number of markdown files (flutter#3276)

Author: kevmoo

CONTRIBUTING.md

@@ -3,7 +3,7 @@
 
 [![Build Status](https://api.cirrus-ci.com/github/flutter/plugins.svg)](https://cirrus-ci.com/github/flutter/plugins/master)
 
-_See also: [Flutter's code of conduct](https://flutter.io/design-principles/#code-of-conduct)_
+_See also: [Flutter's code of conduct](https://github.com/flutter/flutter/blob/master/CODE_OF_CONDUCT.md)_
 
 ## Things you will need
 
@@ -131,17 +131,16 @@ pub global run flutter_plugin_tools xctest --target RunnerUITests --skip <plugin
 We gladly accept contributions via GitHub pull requests.
 
 Please peruse our
-[style guide](https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo) and
-[design principles](https://flutter.io/design-principles/) before
-working on anything non-trivial. These guidelines are intended to
+[style guide](https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo)
+before working on anything non-trivial. These guidelines are intended to
 keep the code consistent and avoid common pitfalls.
 
 To start working on a patch:
 
  * `git fetch upstream`
  * `git checkout upstream/master -b <name_of_your_branch>`
  * Hack away.
- * Verify changes with [flutter_plugin_tools](https://pub.dartlang.org/packages/flutter_plugin_tools)
+ * Verify changes with [flutter_plugin_tools](https://pub.dev/packages/flutter_plugin_tools)
 ```
 pub global activate flutter_plugin_tools
 pub global run flutter_plugin_tools format --plugins plugin_name

packages/android_alarm_manager/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.4.5+19
+
+* Fix outdated links across a number of markdown files ([#3276](https://github.com/flutter/plugins/pull/3276))
+
 ## 0.4.5+18
 
 * Update Flutter SDK constraint.

packages/android_alarm_manager/README.md

@@ -1,6 +1,6 @@
 # android_alarm_manager
 
-[![pub package](https://img.shields.io/pub/v/android_alarm_manager.svg)](https://pub.dartlang.org/packages/android_alarm_manager)
+[![pub package](https://img.shields.io/pub/v/android_alarm_manager.svg)](https://pub.dev/packages/android_alarm_manager)
 
 A Flutter plugin for accessing the Android AlarmManager service, and running
 Dart code in the background when alarms fire.
@@ -121,6 +121,6 @@ register plugins. This can be resolved by running `flutter upgrade` to upgrade
 to the latest Flutter version.**
 
 For help getting started with Flutter, view our online
-[documentation](http://flutter.io/).
+[documentation](https://flutter.dev/).
 
-For help on editing plugin code, view the [documentation](https://flutter.io/platform-plugins/#edit-code).
+For help on editing plugin code, view the [documentation](https://flutter.dev/docs/development/packages-and-plugins/developing-packages#plugin).

packages/android_alarm_manager/pubspec.yaml

@@ -4,7 +4,7 @@ description: Flutter plugin for accessing the Android AlarmManager service, and
 # 0.4.y+z is compatible with 1.0.0, if you land a breaking change bump
 # the version to 2.0.0.
 # See more details: https://github.com/flutter/flutter/wiki/Package-migration-to-1.0.0
-version: 0.4.5+18
+version: 0.4.5+19
 homepage: https://github.com/flutter/plugins/tree/master/packages/android_alarm_manager
 
 dependencies:

packages/android_intent/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 2.0.0-nullsafety.1
+
+* Fix outdated links across a number of markdown files ([#3276](https://github.com/flutter/plugins/pull/3276))
+
 ## 2.0.0-nullsafety
 
 * Migrate to null safety.

packages/android_intent/README.md

@@ -53,20 +53,20 @@ if (platform.isAndroid) {
 Feel free to add support for additional Android intents.
 
 The Dart values supported for the arguments parameter, and their corresponding
-Android values, are listed [here](https://flutter.io/platform-channels/#codec).
+Android values, are listed [here](https://flutter.dev/docs/development/platform-integration/platform-channels#codec).
 On the Android side, the arguments are used to populate an Android `Bundle`
 instance. This process currently restricts the use of lists to homogeneous lists
 of integers or strings.
 
 > Note that a similar method does not currently exist for iOS. Instead, the
-[url_launcher](https://pub.dartlang.org/packages/url_launcher) plugin
+[url_launcher](https://pub.dev/packages/url_launcher) plugin
 can be used for deep linking. Url launcher can also be used for creating
 ACTION_VIEW intents for Android, however this intent plugin also allows
 clients to set extra parameters for the intent.
 
 ## Getting Started
 
 For help getting started with Flutter, view our online
-[documentation](http://flutter.io/).
+[documentation](https://flutter.dev/).
 
-For help on editing plugin code, view the [documentation](https://flutter.io/platform-plugins/#edit-code).
+For help on editing plugin code, view the [documentation](https://flutter.dev/docs/development/packages-and-plugins/developing-packages#plugin).

packages/android_intent/pubspec.yaml

@@ -1,7 +1,7 @@
 name: android_intent
 description: Flutter plugin for launching Android Intents. Not supported on iOS.
 homepage: https://github.com/flutter/plugins/tree/master/packages/android_intent
-version: 2.0.0-nullsafety
+version: 2.0.0-nullsafety.1
 
 flutter:
   plugin:

packages/battery/battery/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.0.10
+
+* Fix outdated links across a number of markdown files ([#3276](https://github.com/flutter/plugins/pull/3276))
+
 ## 1.0.9
 
 * Update Flutter SDK constraint.

packages/battery/battery/README.md

@@ -1,11 +1,11 @@
 # Battery
 
-[![pub package](https://img.shields.io/pub/v/battery.svg)](https://pub.dartlang.org/packages/battery)
+[![pub package](https://img.shields.io/pub/v/battery.svg)](https://pub.dev/packages/battery)
 
 A Flutter plugin to access various information about the battery of the device the app is running on.
 
 ## Usage
-To use this plugin, add `battery` as a [dependency in your pubspec.yaml file](https://flutter.io/platform-plugins/).
+To use this plugin, add `battery` as a [dependency in your pubspec.yaml file](https://flutter.dev/docs/development/platform-integration/platform-channels).
 
 ### Example
 

packages/battery/battery/pubspec.yaml

@@ -2,7 +2,7 @@ name: battery
 description: Flutter plugin for accessing information about the battery state
   (full, charging, discharging) on Android and iOS.
 homepage: https://github.com/flutter/plugins/tree/master/packages/battery/battery
-version: 1.0.9
+version: 1.0.10
 
 flutter:
   plugin: