rename SetShaderConstant to SetShaderParameterValue

[kh-huawei]

Change summary

With the material system refactoring in development, the functions SetShaderConstant were renamed to SetShaderParameterValue

Submission Checklist:

• Descriptive active voice - Do descriptive sentences have a clear subject and action verb?
• Answer the question at hand - Does the documentation answer a what, why, how, or where type of question?
• Consistency - Does the content consistently follow the Style Guide?
• Help the user - Does the documentation show the user something meaningful?

[ShaunaGordon]

Your <type> things are being rendered as markup, instead of displaying.

Suggested change

	The functions **SetShaderConstant_<type>** were renamed to **SetShaderParameterValue_<type>** to more accurately reflect the underlying implementation. For backwards compatability the **SetShaderConstant_<type>** are still available, but considered deprecated.
	The functions **SetShaderConstant_\<type\>** were renamed to **SetShaderParameterValue_\<type\>** to more accurately reflect the underlying implementation. For backwards compatibility the **SetShaderConstant_\<type\>** are still available, but considered deprecated.

Alternatively, just omit the <type> part, making it consistent with the rest of the text.