docs: add requirements and graph compile time to readmes

Author: ChongWei905

README.md

@@ -29,13 +29,13 @@ MindCV is an open-source toolbox for computer vision research and development ba
 
 The following is the corresponding `mindcv` versions and supported `mindspore` versions.
 
-| mindcv | mindspore  |
-|:------:|:----------:|
-|  main  |   master   |
-| v0.4.0 |   2.3.0    |
-| 0.3.0  |   2.2.10   |
-|  0.2   |    2.0     |
-|  0.1   |    1.8     |
+| mindcv |  mindspore  |
+| :----: | :---------: |
+|  main  |   master    |
+| v0.4.0 | 2.3.0/2.3.1 |
+| 0.3.0  |   2.2.10    |
+|  0.2   |     2.0     |
+|  0.1   |     1.8     |
 
 
 ### Major Features