Merge branch 'tr/rfc-reset-doc' into maint

* tr/rfc-reset-doc:
  Documentation/reset: move "undo permanently" example behind "make topic"
  Documentation/reset: reorder examples to match description
  Documentation/reset: promote 'examples' one section up
  Documentation/reset: separate options by mode
  Documentation/git-reset: reorder modes for soft-mixed-hard progression