Update rpc.py

rpc.py

@@ -148,7 +148,7 @@ class DiffAttention(keras.layers.Layer):
         lambda_full = lambda_1 - lambda_2 + self.lambda_init
         att = att1 - lambda_full * att2
 
-        outi = att @ v
+        out = att @ v
         out = out * (1 - self.lambda_init)
         return out