[css_colors] docs: Update deprecated link address (#4537)

Update the Color class's official documentation URL in the README.md of the `css_colors` package.

*List which issues are fixed by this PR. You must list at least one issue.*
- Correct the address of the incorrect hyperlink

packages/css_colors/CHANGELOG.md

@@ -1,5 +1,6 @@
-## NEXT
+## 1.1.2
 
+- Updates the `Color` documentation link in the README.
 - Updates minimum supported SDK version to Flutter 3.7/Dart 2.19.
 - Aligns Dart and Flutter SDK constraints.
 - Updates package description.

packages/css_colors/README.md

@@ -2,7 +2,7 @@ CSS Colors
 ==========
 
 This package defines color constants for the CSS colors. These color constants
-use the [Color](https://docs.flutter.io/flutter/dart-ui/Color-class.html) class
+use the [Color](https://api.flutter.dev/flutter/dart-ui/Color-class.html) class
 from `dart:ui`, which means they're useful for Flutter apps.
 
 Import

packages/css_colors/pubspec.yaml

@@ -2,7 +2,7 @@ name: css_colors
 description: Defines constant dart:ui Color objects for CSS colors (for use in Flutter code).
 repository: https://github.com/flutter/packages/tree/main/packages/css_colors
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+css_colors%22
-version: 1.1.1
+version: 1.1.2
 
 environment:
   sdk: ">=2.19.0 <4.0.0"