Fix bug in down sample

model.py

@@ -67,7 +67,7 @@ class resblock(torch.nn.Module):
 #Downsmaple and upsmaple
 class down_sample(torch.nn.Module):
     def __init__(self, channels):
-        super().__ini__()
+        super().__init__()
         self.conv = nn.Conv2d(channels, channels, 4, stride=2, padding=1)
     def forward(self, x):
         return self.conv(x)