Fix inconsistencies on README.md
Fix inconsistencies on README.md

Misc should be a higher level title on its own,
but it was somehow nested into the contributing section.
tupaschoal/justdelete.me,tupaschoal/justdelete.me,jdm-contrib/justdelete.me,tupaschoal/justdelete.me,jdm-contrib/justdelete.me,jdm-contrib/justdelete.me,jdm-contrib/justdelete.me,tupaschoal/justdelete.me