Fix newline at end of test_loss_13.sh

Author: zdaq12

test/loss/test_loss_13.sh

@@ -15,4 +15,4 @@ fi
 
 ../../numeric_diff --by col --rel-tol 1e-8 \
 		loss_modal_drydep_aero_time_ref.txt \
-		out/loss_modal_drydep_aero_time.txt
+		out/loss_modal_drydep_aero_time.txt