tests: update test-releasenotes-formatting.t output
The output seems to be left outdated because running this test requires
fuzzy-wuzzy which is not generally installed.
Differential Revision: https://phab.mercurial-scm.org/D7723
#require rustfmt test-repo
$ . "$TESTDIR/helpers-testrepo.sh"
$ cd "$TESTDIR"/..
$ RUSTFMT=$(rustup which --toolchain nightly rustfmt)
$ for f in `testrepohg files 'glob:**/*.rs'` ; do
> $RUSTFMT --check --unstable-features --color=never $f
> done