[Slider] Component specs

[aweell]

Task description

• Review and edit the component specs matching with the implementation of the component and using the proper tables and subsections for every spec (Typography, border, etc)
• Update the component images following the image contribution guidelines
• Document the slider with input in a separate section instead of having it on the "User Interface considerations" section

Related tasks

• [Slider] Color specs update #311
• [Slider] Update component documentation to new template #407
• [Slider] Images update #411
• [Slider] Update UI-Kit component #424