[vector_graphic] docs: corrected width/height description in VectorGraphic (#11361)

Corrected the documentation for width and height parameters in the VectorGraphic widget.

Fixes flutter/flutter#184116

## Pre-Review Checklist

Test exemption: this is a documentation-only change.

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packages/vector_graphics/CHANGELOG.md

diff --git a/packages/vector_graphics/CHANGELOG.md b/packages/vector_graphics/CHANGELOG.md
index e9362f5..17362b1 100644
--- a/packages/vector_graphics/CHANGELOG.md
+++ b/packages/vector_graphics/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.1.21
+
+* Corrected width/height parameter documentation in VectorGraphic widget.
+
 ## 1.1.20
 
 * Updates minimum supported SDK version to Flutter 3.35/Dart 3.9.

packages/vector_graphics/lib/src/vector_graphics.dart

diff --git a/packages/vector_graphics/lib/src/vector_graphics.dart b/packages/vector_graphics/lib/src/vector_graphics.dart
index c35cf08..a80ab56 100644
--- a/packages/vector_graphics/lib/src/vector_graphics.dart
+++ b/packages/vector_graphics/lib/src/vector_graphics.dart
@@ -155,11 +155,11 @@
   final BytesLoader loader;
 
   /// If specified, the width to use for the vector graphic. If unspecified,
-  /// the vector graphic will take the width of its parent.
+  /// the vector graphic will take the width of the graphic.
   final double? width;
 
   /// If specified, the height to use for the vector graphic. If unspecified,
-  /// the vector graphic will take the height of its parent.
+  /// the vector graphic will take the height of the graphic.
   final double? height;
 
   /// How to inscribe the picture into the space allocated during layout.

packages/vector_graphics/pubspec.yaml

diff --git a/packages/vector_graphics/pubspec.yaml b/packages/vector_graphics/pubspec.yaml
index 25abea4..3846136 100644
--- a/packages/vector_graphics/pubspec.yaml
+++ b/packages/vector_graphics/pubspec.yaml
@@ -2,7 +2,7 @@
 description: A vector graphics rendering package for Flutter using a binary encoding.
 repository: https://github.com/flutter/packages/tree/main/packages/vector_graphics
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+vector_graphics%22
-version: 1.1.20
+version: 1.1.21
 
 environment:
   sdk: ^3.9.0