Add reference to FragmentShader API in the description to help folks discover this sample.

README.md

@@ -28,7 +28,7 @@ Googler's, you can freely add samples to the [flutter/demos] repository.
 * [`navigation_and_routing`] - A sample that shows how to use [go_router] API to handle common navigation scenarios.
 * [`pedometer`] - A demo of a plugin that leverages FFIgen & JNIgen to call platform APIs directly from Dart code.
 * [`platform_design`] - This sample project shows a Flutter app that maximizes application code reuse while adhering to different design patterns on Android and iOS.
-* [`simple_sdf`] - A simple [Flutter fragment shaders] sample project showing how to use Signed Distance Functions.
+* [`simple_sdf`] - A simple [Flutter fragment shaders] sample project showing how to draw Signed Distance Functions with the FragmentShader API.
 * [`simple_shader`] - A simple [Flutter fragment shaders] sample project.
 * [`testing_app`] - A sample app that shows different types of testing in Flutter.
 * [`web_embedding`] - This directory contains examples of how to embed Flutter in web apps (without iframes).

simple_sdf/README.md

@@ -1,6 +1,6 @@
 # `simple_sdf`
 
-A simple [Flutter fragment shaders][] sample project showing how to use Signed Distance Functions.
+A simple [Flutter fragment shaders][] sample project showing how to draw Signed Distance Functions with the FragmentShader API.
 
 Use `flutter create --no-overwrite .` to initialize the project.