Image Gradient Docs, Don't Inform Image Format Support

[HogJonny-AMZN]

Is your feature request related to a problem? Please describe. It's not clear in the documentation which types/formats of images the Image Gradient component works with. Can I reuse an existing texture image? must I use the _gsi naming convention or image settings? Can I share image data or must I duplicate my image for different uses cases?

Describe the solution you'd like I would like the Image Gradient documentation to not just tell me how to use the component interface and params, but tell me holistically about the functionality of utilizing the component. Docs should cover image formats and related data to what this component can work with: https://www.o3de.org/docs/user-guide/components/reference/gradients/image-gradient/

Describe alternatives you've considered If the data exists elsewhere, then link through to to relevant docs

[lmbr-pip]

Moving to O3DE.org as this is docs request.

[chanmosq]

The doc may also benefit from linking to Texture Settings doc, which talks about the types used