update doc (#486)

* update doc

* Fix, error info in interp ref op

doc/roadmap.md

-todo......
\ No newline at end of file
+## TODO List
+
+### 2021Q1
+
+- [ ] optimize int8 implement on armv7/armv8.1
+- [ ] optimize AutoKernel implement on x86
+- [ ] fix the Float32 bugs of Vulkan 
+- [ ] support the mode type of PaddlePaddle
+- [ ] support the mode type of OneFlow
+- [ ] opensource the plugin implement of NPU
+- [ ] add more test case

src/dev/cpu/op/interp/interp_ref.c

@@ -297,7 +297,7 @@ static int run(struct node_ops* node_ops, struct exec_node* exec_node, struct ex
     int ret = -1;
     if (input_tensor->data_type == TENGINE_DT_FP32)
         ret = ref_interp_fp32(input_tensor, output_tensor, param);
-    if (input_tensor->data_type == TENGINE_DT_UINT8)
+    else if (input_tensor->data_type == TENGINE_DT_UINT8)
         ret = ref_interp_uint8(input_tensor, output_tensor, param);
     else
         printf("Input data type %d not to be supported.\n", input_tensor->data_type);