Update test case for lifted GADT type rendering
Update test case for lifted GADT type rendering

The parsing of these seems to have been fixed by GHC folk and it now
renders differently. IMHO it now renders in a better way so I'm updating
the test to reflect this.

(cherry picked from commit 49b2a05ee0d769568d97a091de93f2ce2512eef6)

ghcjs/haddock-internal,ghcjs/haddock-internal