[FileUploader] Update the Website guidance

[thyhmdo]

Usage tab

• All current images need to be updated to have the trash icon and not the close icon.

Anatomy

• We do want to show the the new icons + link option in this section
  • Create an image

Interactions

• Update the image to the new click target

Modifiers

• Mention the icons and the link text is optional
  • Create image(s)

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Style tab

• All current images need to be updated to have the trash icon and not the close icon.

Interactive state color

• We need to show images and update the table to reflect the new enhancements.
• Change the heading to include the word "color".

Structure

• We need to show images and update the table to reflect the new enhancements.

Size

• Change the heading to not be plural to match our template. (And in the anchor link)