Chip spacing tokens are incorrect in specs page

[raquelarrojo]

Describe the bug

There are some inconsistencies in specs page:

• containerPaddingLeft and containerPaddingRight should be renamed as contentPaddingLeft and contentPaddingRight.
• Their values should be16px instead of 8px as they are in UI kit and in implementation.
• Add contentPaddingTop and contentPaddingBottom tokens.
• labelMarginLeft and labelMarginRightshould be remove since they do not exist.
• iconSpacing token should be added.
• Images in specs should be updated since they are showing 8px in padding instead of 16px.

Screenshots