Fix formatting.

Author: erikfrey

mujoco/mjx/testspeed.py

@@ -92,9 +92,7 @@ def _main(argv: Sequence[str]):
   print(
     f"Model nbody: {m.nbody} nv: {m.nv} ngeom: {m.ngeom} is_sparse: {_IS_SPARSE.value}"
   )
-  print(
-    f"Data ncon: {d.ncon} nefc: {d.nefc}"
-  )
+  print(f"Data ncon: {d.ncon} nefc: {d.nefc}")
   print(f"Rolling out {_NSTEP.value} steps at dt = {m.opt.timestep:.3f}...")
   jit_time, run_time, steps = mjx.benchmark(
     mjx.__dict__[_FUNCTION.value],