tests: make whitespace consistent

Signed-off-by: John Keeping <john@keeping.me.uk>

tests/t0107-snapshot.sh

@@ -20,7 +20,10 @@ run_test 'strip off the header lines' '
 	tail -n +6 trash/tmp > trash/master.tar.gz
 '
 
-run_test 'verify gzip format' 'gunzip --test trash/master.tar.gz'
+run_test '
+	verify gzip format' 'gunzip --test trash/master.tar.gz
+'
+
 run_test 'untar' '
 	rm -rf trash/master &&
 	tar -xf trash/master.tar.gz -C trash