STY: fix black issues

Author: andyfaff

refellips/objectiveSE.py

@@ -381,7 +381,8 @@ def logl(self, pvals=None):
         if self.lnsigma is not None:
             _model = np.r_[psi, delta]
             var_y = (
-                y_err * y_err + np.exp(2 * float(self.lnsigma)) * _model * _model
+                y_err * y_err
+                + np.exp(2 * float(self.lnsigma)) * _model * _model
             )
         else:
             var_y = y_err**2