fix: style stats component profile

[Sembauke]

Checklist:

• I have read and followed the contribution guidelines.
• I have read and followed the how to open a pull request guide.
• My pull request targets the main branch of freeCodeCamp.
• I have tested these changes either locally on my machine, or GitPod.

This fixes a couple of things for the Stats components that were left out in the previous re-design:

1. font-style is now Inter instead of Sans-serif
2. font-weight is correct on the points
3. font-size is now correct on all text
4. The header is now placed on the left instead of centre
5. Added the missing horizontal line above the stats component
6. Removed semi-colons from points text

New:

Old:

Edit: it is missing the semi-colons as I did not clean the cache

Related to #48234

[Sembauke]

Seems like Ahmad has a pr open that fixes all the styles.