fix syntax error

lasy/profiles/gaussian_profile.py

@@ -126,7 +126,7 @@ class GaussianProfile(CombinedLongitudinalTransverseProfile):
     """
 
     def __init__(
-        self, wavelength, pol, laser_energy, w0, tau, t_peak, cep_phase=0, z_foc=0, phi2=0, beta=0, zeta=0, stc_theta=0)
+        self, wavelength, pol, laser_energy, w0, tau, t_peak, cep_phase=0, z_foc=0, phi2=0, beta=0, zeta=0, stc_theta=0
     ):
         super().__init__(
             wavelength,