[Port] [2022.3] DOCG-6832 Update CGPROGRAM to HLSLPROGRAM

Author: markg-unity

Packages/com.unity.render-pipelines.universal/Documentation~/writing-shaders-urp-basic-unlit-structure.md

@@ -143,8 +143,6 @@ This block contains the HLSL program code.
 
 > **NOTE**: HLSL language is the preferred language for URP shaders.
 
-> **NOTE**: URP supports the CG language. If you add the CGPROGRAM/ENDCGPROGRAM block in a shader, Unity includes shaders from the Built-in Render Pipeline library automatically. If you include shaders from the SRP shader library, some SRP shader macros and functions might conflict with the Built-in Render Pipeline shader functions. Shaders with the CGPROGRAM block are not SRP Batcher compatible.
-
 This block contains the `#include` declaration with the reference to the `Core.hlsl` file.
 
 ```c++
@@ -164,6 +162,8 @@ Varyings vert(Attributes IN)
 }
 ```
 
+> **Note**: Don't import shader library files from both the Scriptable Render Pipeline (SRP) and the Built-In Render Pipeline in the same shader. Some SRP shader macros and functions might conflict with the Built-in Render Pipeline shader functions. For more information, refer to [Shader methods in URP](use-built-in-shader-methods) and [Import a file from the shader library in the Built-In Render Pipeline](../SL-BuiltinIncludes).
+
 The fragment shader in this basic HLSL code outputs the single color predefined in the code:
 
 ```c++