[Port] [2021.3] DOCG-7365 Shader Graph feedback improvements

Author: svc-reach-platform-support

Packages/com.unity.shadergraph/Documentation~/Normal-Vector-Node.md

@@ -1,15 +1,22 @@
-## Description
+# Normal Vector node
 
-Provides access to the mesh vertex or fragment's **Normal Vector**. The coordinate space of the output value can be selected with the **Space** dropdown parameter.
+The Normal Vector node outputs the normal of a vertex or fragment of a mesh.
+
+For more information about normals, refer to [Normal maps](https://docs.unity3d.com/Manual/StandardShaderMaterialParameterNormalMapLanding.html).
 
 ## Ports
 
-| Name        | Direction           | Type  | Binding | Description |
+| **Name** | **Direction** | **Type** | **Binding** | **Description** |
 |:------------ |:-------------|:-----|:---|:---|
-| Out | Output      |    Vector 3 | None | Mesh's **Normal Vector**. |
+| **Out** | Output | Vector 3 | None | The normal of the vertex or fragment of the mesh, depending on the [shader stage](Shader-Stage.md) of the graph section. |
+
+## Space
 
-## Parameters
+The **Space** dropdown determines the coordinate space of the normal vector. 
 
-| Name        | Type           | Options  | Description |
-|:------------ |:-------------|:-----|:---|
-| Space | Dropdown | Object, View, World, Tangent | Selects coordinate space of **Normal Vector** to output. |
+| **Option** | **Description** |
+|-|-|
+| **Object**  | Returns the vertex or fragment normal in object space, where up is the up axis of local space. |
+| **View** | Returns the vertex or fragment normal in view space, where up is the up direction of the camera. |
+| **World**   | Returns the vertex or fragment normal in world space, where up is the up direction of the scene. |
+| **Tangent** | Returns the vertex or fragment normal in tangent space, where up is away from the surface of the mesh. |

Packages/com.unity.shadergraph/Documentation~/Not-Node.md

@@ -1,23 +1,18 @@
-# Not Node
+# Not node
 
-## Description
-
-Returns the opposite of input **In**. If **In** is true the output will be false, otherwise it will be true. This is useful for [Branching](Branch-Node.md).
+The Not node outputs the opposite of an input. If the input is true the output is false, otherwise the output is true. This node is useful for [branching](Branch-Node.md).
 
 ## Ports
 
-| Name        | Direction           | Type  | Binding | Description |
+| **Name** | **Direction** | **Type** | **Binding** | **Description** |
 |:------------ |:-------------|:-----|:---|:---|
-| In      | Input | Boolean | None | Input value |
-| Out | Output      |    Boolean | None | Output value |
+| **In** | Input | Boolean | None | The input value. |
+| **Out** | Output | Boolean | None | The opposite of **In**. |
 
-## Generated Code Example
+## Generated code example
 
 The following example code represents one possible outcome of this node.
 
 ```
-void Unity_NormalUnpack_float(float In, out float Out)
-{
-    Out = !In;
-}
+Out = !In;
 ```