Schema corrections by @madskristensen without tabs/spaces

Fixes the same issues that @madskristensen fixed in https://github.com/jsonresume/resume-schema/pull/105

But without:

 * indentation changes (tabs/spaces)
 * changes to `email` section which have become obsolete
 * changes to `profiles` section which did neither match the current use in `resume.json` nor the style from `email`