feat(component/badge): ensure the correct display of text in according to design rules

[tiloyi]

I have read the contributing guidelines

• [x] Yes
• [ ] No

Does this PR introduce a breaking change?

• [ ] Yes
• [x] No

Describe the changes

Ensure the correct display of text in according to design rules.

The component design rules specify that the text of the Badge component must have an upper case first letter but the rest of the text in lower case.