Updated with ruff formatter

testing/benchmarking/bench_simple.py

@@ -1,9 +1,8 @@
 """A series of models with different domain sizes used for benchmarking.
-    The domain is free space with a simple source (Hertzian Dipole) and
-    receiver at the centre.
+The domain is free space with a simple source (Hertzian Dipole) and
+receiver at the centre.
 """
 
-
 import itertools
 from pathlib import Path
 
@@ -36,7 +35,9 @@ for d, threads in itertools.product(domains, ompthreads):
     dxdydz = gprMax.Discretisation(p1=(dl, dl, dl))
     time_window = gprMax.TimeWindow(time=3e-9)
     wv = gprMax.Waveform(wave_type="gaussiandotnorm", amp=1, freq=900e6, id="MySource")
-    src = gprMax.HertzianDipole(p1=(x / 2, y / 2, z / 2), polarisation="x", waveform_id="MySource")
+    src = gprMax.HertzianDipole(
+        p1=(x / 2, y / 2, z / 2), polarisation="x", waveform_id="MySource"
+    )
 
     omp = gprMax.OMPThreads(n=threads)