Update framework and flutter fix flutter.dev/docs links (#150174)

Update links in the framework and fix data files to their newest, up-to-date destinations.

Author: parlough

packages/flutter/lib/animation.dart

@@ -148,9 +148,9 @@
 ///
 /// See also:
 ///
-///  * [Introduction to animations](https://flutter.dev/docs/development/ui/animations)
+///  * [Introduction to animations](https://docs.flutter.dev/ui/animations)
 ///    on flutter.dev.
-///  * [Animations tutorial](https://flutter.dev/docs/development/ui/animations/tutorial)
+///  * [Animations tutorial](https://docs.flutter.dev/ui/animations/tutorial)
 ///    on flutter.dev.
 ///  * [Sample app](https://github.com/flutter/samples/tree/main/animations),
 ///    which showcases Flutter's animation features.

packages/flutter/lib/cupertino.dart

@@ -9,15 +9,15 @@
 /// This library is designed for apps that run on iOS. For apps that may also
 /// run on other operating systems, we encourage use of other widgets, for
 /// example the [Material
-/// Design](https://flutter.dev/docs/development/ui/widgets/material) set.
+/// Design](https://docs.flutter.dev/ui/widgets/material) set.
 ///
 /// {@youtube 560 315 https://www.youtube.com/watch?v=3PdUaidHc-E}
 ///
 /// See also:
 ///
-///  * [flutter.dev/widgets/cupertino](https://flutter.dev/docs/development/ui/widgets/cupertino)
+///  * [flutter.dev/widgets/cupertino](https://docs.flutter.dev/ui/widgets/cupertino)
 ///    for a catalog of all Cupertino widgets.
-///  * [flutter.dev/widgets](https://flutter.dev/widgets/)
+///  * [flutter.dev/widgets](https://docs.flutter.dev/ui/widgets)
 ///    for a catalog of commonly-used Flutter widgets.
 
 library cupertino;

packages/flutter/lib/fix_data/fix_cupertino.yaml

@@ -3,7 +3,7 @@
 # found in the LICENSE file.
 
 # For details regarding the *Flutter Fix* feature, see
-# https://flutter.dev/docs/development/tools/flutter-fix
+# https://docs.flutter.dev/tools/flutter-fix
 
 # Please add new fixes to the top of the file, separated by one blank line
 # from other fixes. In a comment, include a link to the PR where the change

packages/flutter/lib/fix_data/fix_gestures.yaml

@@ -3,7 +3,7 @@
 # found in the LICENSE file.
 
 # For details regarding the *Flutter Fix* feature, see
-# https://flutter.dev/docs/development/tools/flutter-fix
+# https://docs.flutter.dev/tools/flutter-fix
 
 # Please add new fixes to the top of the file, separated by one blank line
 # from other fixes. In a comment, include a link to the PR where the change

packages/flutter/lib/fix_data/fix_material/fix_app_bar.yaml

@@ -3,7 +3,7 @@
 # found in the LICENSE file.
 
 # For details regarding the *Flutter Fix* feature, see
-# https://flutter.dev/docs/development/tools/flutter-fix
+# https://docs.flutter.dev/tools/flutter-fix
 
 # Please add new fixes to the top of the file, separated by one blank line
 # from other fixes. In a comment, include a link to the PR where the change

packages/flutter/lib/fix_data/fix_material/fix_app_bar_theme.yaml

@@ -3,7 +3,7 @@
 # found in the LICENSE file.
 
 # For details regarding the *Flutter Fix* feature, see
-# https://flutter.dev/docs/development/tools/flutter-fix
+# https://docs.flutter.dev/tools/flutter-fix
 
 # Please add new fixes to the top of the file, separated by one blank line
 # from other fixes. In a comment, include a link to the PR where the change

packages/flutter/lib/fix_data/fix_material/fix_button_bar.yaml

@@ -3,7 +3,7 @@
 # found in the LICENSE file.
 
 # For details regarding the *Flutter Fix* feature, see
-# https://flutter.dev/docs/development/tools/flutter-fix
+# https://docs.flutter.dev/tools/flutter-fix
 
 # Please add new fixes to the top of the file, separated by one blank line
 # from other fixes. In a comment, include a link to the PR where the change

packages/flutter/lib/fix_data/fix_material/fix_color_scheme.yaml

@@ -3,7 +3,7 @@
 # found in the LICENSE file.
 
 # For details regarding the *Flutter Fix* feature, see
-# https://flutter.dev/docs/development/tools/flutter-fix
+# https://docs.flutter.dev/tools/flutter-fix
 
 # Please add new fixes to the top of the file, separated by one blank line
 # from other fixes. In a comment, include a link to the PR where the change

packages/flutter/lib/fix_data/fix_material/fix_material.yaml

@@ -3,7 +3,7 @@
 # found in the LICENSE file.
 
 # For details regarding the *Flutter Fix* feature, see
-# https://flutter.dev/docs/development/tools/flutter-fix
+# https://docs.flutter.dev/tools/flutter-fix
 
 # Please add new fixes to the top of the file, separated by one blank line
 # from other fixes. In a comment, include a link to the PR where the change

packages/flutter/lib/fix_data/fix_material/fix_sliver_app_bar.yaml

@@ -3,7 +3,7 @@
 # found in the LICENSE file.
 
 # For details regarding the *Flutter Fix* feature, see
-# https://flutter.dev/docs/development/tools/flutter-fix
+# https://docs.flutter.dev/tools/flutter-fix
 
 # Please add new fixes to the top of the file, separated by one blank line
 # from other fixes. In a comment, include a link to the PR where the change