Merge branch 'fix_te' into 'NIFTy_5'

Fix te

See merge request ift/nifty-dev!193

nifty5/operators/energy_operators.py

@@ -331,8 +331,8 @@ class AveragedEnergy(EnergyOperator):
     Note
     ----
     Having symmetrized residual samples, with both v_i and -v_i being 
-    present ensures that the distribution mean is exactly represented.
-    
+    present ensures that the distribution mean is exactly represented. 
+
     :class:`AveragedEnergy(h)` approximates
     :math:`\\left< H(f) \\right>_{G(f-m,D)}` if the residuals
     :math:`f-m` are drawn from a Gaussian distribution with covariance