minor fixes

README-ZH.md

 | -----------------------------------------------| ------------------------- | ------------------------- |
 | 1.5.4 及以下     | 2019.4.10f1 及以上  | N\A |
 | 2.0.1   | 2019.4.26f1c1  | N\A |
-| 2.0.2   | 2019.4.26f1c1 及以上 | N\A |
+| 2.0.2 及以上   | 2019.4.26f1c1 及以上 | N\A |
 
 #### UIWidgets包
 

README.md

 | -----------------------------------------------| ------------------------- | ------------------------- |
 | 1.5.4 and below     | 2019.4.10f1 and above  | N\A |
 | 2.0.1   | 2019.4.26f1c1  | N\A |
-| 2.0.2   | 2019.4.26f1c1 and above | N\A |
+| 2.0.2 and above   | 2019.4.26f1c1 and above | N\A |
 
 #### UIWidgets Package
 Visit our Github repository https://github.com/Unity-Technologies/com.unity.uiwidgets