update template

Author: dboyliao

utensor_cgen/backend/utensor/snippets/templates/snippets/rearch/op_missing.cpp

@@ -1,12 +1,12 @@
 /*
     FIXME: {{op_type}} currently not supported, you have to fill up this section or it won't compile
 
-    Input Tensors:
+    1. Declare the operators of type {{op_type}}
+    2. Declare input tensors:
     {%for tensor, var_name in zip(input_tensors, input_var_names)%}
         - {{tensor.name}}, of type {{tensor.dtype}} and is named as {{var_name}} in this file
     {%endfor%}
-
-    Output Tensors:
+    3. Declare output Tensors:
     {%for tensor, var_name in zip(output_tensors, out_var_names)%}
         - {{tensor.name}} is of type {{tensor.dtype}}, shape {{tensor.shape}} and should be named as {{var_name}}
         {%if quant_params_map[tensor.name]%}
@@ -16,6 +16,9 @@
             - is per tensor quantization: {{quant_params_map[tensor.name]["is_per_tensor"]}}
         {%endif%}
     {%endfor%}
+    4. invoke `eval()`
+
+    NOTE: normally, operator is implemented as template with type parameters as the data types of input/output tensors
     */
     // Don't forget to comment this out when you fill up the missing op and tensors
     static_assert(false, "{{op_type}} is not currently supported. Read information above please.");