doc: clean up Samples documentation (#664)

* rename sample installation documentation (#663)
* reorder the sample list
* use <version> instead of a specific package version
* rename "ToonShader" scenes to "UnityChan"
* add a reference to UnityChan license
* update TOC
* update links to Unity manuals

Author: sindharta

com.unity.toonshader/Documentation~/SampleInstallation.md

@@ -0,0 +1,54 @@
+# Installing the sample scenes
+
+The **Unity Toon Shader (UTS)** package provides 
+sample scenes for every supported render pipeline. 
+Import the sample set that matches the render pipeline currently assigned to your project.
+
+## Before you import
+
+- Confirm that the [render pipeline](https://docs.unity3d.com/6000.0/Documentation/Manual/render-pipelines.html) you intend to use is installed and active.
+
+## Import samples through Package Manager
+
+1. Open the [Package Manager](https://docs.unity3d.com/6000.0/Documentation/Manual/Packages.html).
+2. Select **Unity Toon Shader** from the package list.
+3. In the **Samples** section, choose the collection that matches your render pipeline.
+4. Click **Import**. Unity creates an `Assets/Samples/Unity Toon Shader/<version>/...` folder containing the selected samples.
+
+> Tip: You can re-import the samples at any time. Unity prompts you before overwriting existing files.
+
+## Sample scene overview
+
+### Universal Render Pipeline
+
+`Assets/Samples/Unity Toon Shader/<version>/URP`
+
+- `AngelRing/AngelRing.unity` &mdash; Setup for the [Angel Ring](AngelRing.md) feature.
+- `Cube_HardEdge/Cube_HardEdge.unity` &mdash; Reference for baked normals.
+- `BoxProjection/BoxProjection.unity` &mdash; Dark room lighting with box projection probes.
+- `EmissiveAnimation/EmissiveAnimation.unity` &mdash; Animated [Emission](Emission.md) sequences.
+- `LightAndShadows/LightAndShadows.unity` &mdash; Comparison between the PBR shader and UTS.
+- `MatCapMask/MatCapMask.unity` &mdash; Using [MatCap](MatCap.md) masks.
+- `Mirror/MirrorTest.unity` &mdash; Mirror material setup and testing.
+- `NormalMap/NormalMap.unity` &mdash; Normal map techniques tuned with UTS.
+- `PointLightTest/PointLightTest.unity` &mdash; Cel-shading examples using point lights.
+- `KageBall/KageBall.unity` &mdash; The basics.
+- `UnityChan/UnityChan.unity` &mdash; SD Unity-chan model showcasing illustration-style shading.
+- `UnityChan_CelLook/UnityChan_CelLook.unity` &mdash; SD Unity-chan model with classic cel-look settings for characters.
+- `UnityChan_Emissive/UnityChan_Emissive.unity` &mdash; SD Unity-chan model showing the [Emission](Emission.md) feature.
+- `UnityChan_Firefly/UnityChan_Firefly.unity` &mdash; SD Unity-chan model with multiple point lights.
+
+> Unity-chan assets are licensed under the [Unity-Chan License](http://unity-chan.com/contents/guideline_en/)
+
+### Built-in Render Pipeline
+
+`Assets/Samples/Unity Toon Shader/<version>/Built-In RP`
+
+- Mirrors the URP scenes but configured for built-in render pipeline.
+
+### High Definition Render Pipeline
+
+`Assets/Samples/Unity Toon Shader/<version>/HDRP`
+
+- Mirrors the URP scenes but configured for HDRP.
+

com.unity.toonshader/Documentation~/TableOfContents.md

@@ -23,7 +23,7 @@
   * [Box Light](HDRPBoxLight.md)
   * [Toon EV Adjustment](ToonEVAdjustment.md)
 * [Material Converter](MaterialConverter.md)
-* [Samples](sample-instlation.md)
+* [Samples](SampleInstallation.md)
 * [Feature Difference](FeatureModel_en.md)
 * [Known Issues](Known-issue.md)