!5934 update supported platform info

Merge pull request !5934 from guozhijian/update_platform_info

README.md

@@ -66,10 +66,12 @@ MindSpore offers build options across multiple backends:
 | Hardware Platform | Operating System | Status |
 | :---------------- | :--------------- | :----- |
 | Ascend910 | Ubuntu-x86 | ✔️ |
+|  | Ubuntu-aarch64 | ✔️ |
 |  | EulerOS-x86 | ✔️ |
 |  | EulerOS-aarch64 | ✔️ |
 | GPU CUDA 10.1 | Ubuntu-x86 | ✔️ |
 | CPU | Ubuntu-x86 | ✔️ |
+|  | Ubuntu-aarch64 | ✔️ |
 |  | Windows-x86 | ✔️ |
 
 For installation using `pip`, take `CPU` and `Ubuntu-x86` build version as an example:

RELEASE.md

@@ -52,7 +52,7 @@
 
 ### MindSpore Lite
 * Converter
-    * Support third party model, including TFLite/Caffe/ONNX.
+    * Support third-party models, including TFLite/Caffe/ONNX.
     * Add 93 TFLite op.
     * Add 24 Caffe op.
     * Add 62 ONNX op.