fixed a few comments

theano/sandbox/scan_module/scan_op.py

@@ -194,8 +194,8 @@ class ScanOp(PureOp):
         base_inputs = self.inputs[:len(self.outputs)]
         base_buffers = node_input_storage[1: 1 + len(base_inputs)]
         aux_inputs = self.inputs[len(self.outputs):]
-        # 3.1 First the auxiliary arguments, those that are parameters or
         aux_buffers = node_input_storage[1 + len(base_inputs):]
+        # 2.1 First the auxiliary arguments, those that are parameters or
         # input
         for mem_buf, var in izip(ndoe_input_storage[1 + len(base_inputs):],
                                  aux_inputs):