Add reference to StrutStyle from TextStyle (#36867)

packages/flutter/lib/src/painting/text_style.dart

@@ -134,6 +134,8 @@ const String _kColorBackgroundWarning = 'Cannot provide both a backgroundColor a
 ///
 /// ![Text height comparison diagram](https://flutter.github.io/assets-for-api-docs/assets/painting/text_height_comparison_diagram.png)
 ///
+/// See [StrutStyle] for further control of line height at the paragraph level.
+///
 /// ### Wavy red underline with black text
 ///
 /// {@tool sample}
@@ -534,13 +536,11 @@ class TextStyle extends Diagnosticable {
   ///
   /// ![Text height diagram](https://flutter.github.io/assets-for-api-docs/assets/painting/text_height_diagram.png)
   ///
-  /// {@tool sample}
-  ///
   /// Examples of the resulting line heights from different values of `TextStyle.height`:
   ///
   /// ![Text height comparison diagram](https://flutter.github.io/assets-for-api-docs/assets/painting/text_height_comparison_diagram.png)
   ///
-  /// {@end-tool}
+  /// See [StrutStyle] for further control of line height at the paragraph level.
   final double height;
 
   /// The locale used to select region-specific glyphs.