Rearrange order of the release note highlights
Rearrange order of the release note highlights

Summary:
I noticed that the highlights do not highlight the breaking changes first,
so I re-ordered them to what - to me, as a general and not power-user of
ghc - seems a more sensible order.

Should I have opened a ticket for this?

Test Plan: This is a doc change.

Reviewers: ezyang, austin

Reviewed By: ezyang, austin

Subscribers: thomie

Differential Revision: https://phabricator.haskell.org/D736

GHC Trac Issues: #10038

forked-upstream-packages-for-ghcjs/ghc,nathyong/microghc-ghc,forked-upstream-packages-for-ghcjs/ghc,nathyong/microghc-ghc,forked-upstream-packages-for-ghcjs/ghc,nathyong/microghc-ghc,forked-upstream-packages-for-ghcjs/ghc,nathyong/microghc-ghc,forked-upstream-packages-for-ghcjs/ghc,nathyong/microghc-ghc,forked-upstream-packages-for-ghcjs/ghc,forked-upstream-packages-for-ghcjs/ghc,nathyong/microghc-ghc,nathyong/microghc-ghc