Addressed Ambiguity in transform.scale constructor docs (#128182)

This PR updates the docs for Transform.Scale constructor by clearing up some ambiguity regarding how the scaling factor is affected by the omission of a value given you provide scaleX and scaleY as arguments as opposed to just scale

addresses bug [126822](https://github.com/flutter/flutter/issues/126822)

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- [X ] I listed at least one issue that this PR fixes in the description above.
- [ X] I updated/added relevant documentation (doc comments with `///`).
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packages/flutter/lib/src/widgets/basic.dart

@@ -1371,7 +1371,7 @@ class Transform extends SingleChildRenderObjectWidget {
 
   /// Creates a widget that scales its child along the 2D plane.
   ///
-  /// The `scaleX` argument provides the scalar by which to multiply the `x` axis, and the `scaleY` argument provides the scalar by which to multiply the `y` axis. Either may be omitted, in which case that axis defaults to 1.0.
+  /// The `scaleX` argument provides the scalar by which to multiply the `x` axis, and the `scaleY` argument provides the scalar by which to multiply the `y` axis. Either may be omitted, in which case the scaling factor for that axis defaults to 1.0.
   ///
   /// For convenience, to scale the child uniformly, instead of providing `scaleX` and `scaleY`, the `scale` parameter may be used.
   ///