Update various flutter.dev and dart.dev links (#1238)

Author: parlough

pkgs/cronet_http/example/android/.gitignore

@@ -7,7 +7,7 @@ gradle-wrapper.jar
 GeneratedPluginRegistrant.java
 
 # Remember to never publicly share your keystore.
-# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
+# See https://flutter.dev/to/reference-keystore
 key.properties
 **/*.keystore
 **/*.jks

pkgs/cupertino_http/lib/cupertino_http.dart

@@ -9,7 +9,7 @@
 /// configuration on macOS) then the
 /// [`com.apple.security.network.client`](https://developer.apple.com/documentation/bundleresources/entitlements/com_apple_security_network_client)
 /// entitlement is required to use `package:cupertino_http`. See
-/// [Entitlements and the App Sandbox](https://docs.flutter.dev/platform-integration/macos/building#entitlements-and-the-app-sandbox).
+/// [Entitlements and the App Sandbox](https://flutter.dev/to/macos-entitlements).
 ///
 /// # CupertinoClient
 ///

pkgs/flutter_http_example/android/.gitignore

@@ -7,7 +7,7 @@ gradle-wrapper.jar
 GeneratedPluginRegistrant.java
 
 # Remember to never publicly share your keystore.
-# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
+# See https://flutter.dev/to/reference-keystore
 key.properties
 **/*.keystore
 **/*.jks

pkgs/flutter_http_example/android/app/build.gradle

@@ -44,7 +44,7 @@ android {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "com.example.flutter_http_example"
         // You can update the following values to match your application needs.
-        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
+        // For more information, see: https://flutter.dev/to/review-gradle-config.
         minSdkVersion flutter.minSdkVersion
         targetSdkVersion flutter.targetSdkVersion
         versionCode flutterVersionCode.toInteger()

pkgs/ok_http/example/analysis_options.yaml

@@ -25,4 +25,4 @@ linter:
     # prefer_single_quotes: true  # Uncomment to enable the `prefer_single_quotes` rule
 
 # Additional information about this file can be found at
-# https://dart.dev/guides/language/analysis-options
+# https://dart.dev/tools/analysis

pkgs/ok_http/example/android/.gitignore

@@ -7,7 +7,7 @@ gradle-wrapper.jar
 GeneratedPluginRegistrant.java
 
 # Remember to never publicly share your keystore.
-# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
+# See https://flutter.dev/to/reference-keystore
 key.properties
 **/*.keystore
 **/*.jks

pkgs/ok_http/example/android/app/build.gradle

@@ -37,7 +37,7 @@ android {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId = "com.example.ok_http_example"
         // You can update the following values to match your application needs.
-        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
+        // For more information, see: https://flutter.dev/to/review-gradle-config.
         minSdk = flutter.minSdkVersion
         targetSdk = flutter.targetSdkVersion
         versionCode = flutterVersionCode.toInteger()