[Docs] Stiffness per constraint type

[josevalverdeinbibo]

Definition of Done:

• [x] Update the attribute editor template screenshots showing the "Stiffness Settings" section.
  • attribute_editor_part_two_muscle.png
  • attribute_editor_part_two_ribbon.png
  • attribute_editor_part_two_simshape.png
  • attribute_editor_part_two_skin.png
• [x] Modify the attribute tables for all deformers to include the new stiffness attributes.
• [x] Add a note mentioning the attributes deprecated and the behaviour when the checkbox is enabled.

[lucasferryinbibo]

I was reading through the docs. Could you fix these typos in this PR please? thanks! (In Licensing section)

[lucasferryinbibo]

This issue was not formally closed as we are waiting for final approval from @carlosmonteagudoinbibo and to align with the final decisions made whe we closed the original development task