Fixed wrong parenthesis in PSR definition

Co-authored-by: Sarthak Pati <[email protected]>

GANDLF/metrics/synthesis.py

@@ -69,7 +69,7 @@ def peak_signal_noise_ratio(target, prediction, data_range=None, epsilon=None) -
             min_v = 0 if torch.min(target) > 0 else torch.min(target) #look at this line
             max_v = torch.max(target)
             data_range = max_v - min_v
-        return 10.0 * (( torch.log10(data_range) ** 2) / (mse + epsilon) )
+        return 10.0 * torch.log10((data_range ** 2) / (mse + epsilon))
 
 
 def mean_squared_log_error(target, prediction) -> torch.Tensor: