update ernie-unimo info (#668)

README.en.md

@@ -14,7 +14,7 @@ ERNIE 2.0 builds a strong basic for nearly every NLP tasks: Text Classification,
 
 - May.20.2021:
     - [`ERNIE-Doc`](https://github.com/PaddlePaddle/ERNIE/tree/repro/ernie-doc), [`ERNIE-Gram`](./ernie-gram/), [`ERNIE-ViL`](https://github.com/PaddlePaddle/ERNIE/tree/repro/ernie-vil) models are **avaliable** now!
-    - `ERNIE-UNIMO` will be released soon, [link](./ernie-unimo)
+    - `ERNIE-UNIMO` has been released in [here](https://github.com/PaddlePaddle/ERNIE/tree/repro/ernie-unimo).
 
 - Dec.29.2020:
  	- Pretrain and finetune ERNIE with [PaddlePaddle v2.0](https://github.com/PaddlePaddle/Paddle/tree/release/2.0-rc).

README.zh.md

@@ -15,7 +15,7 @@ ERNIE是百度开创性提出的基于知识增强的持续学习语义理解框
       - 多粒度语言知识模型`ERNIE-Gram` [正式开源](./ernie-gram/)
       - 超长文本双向建模预训练模型`ERNIE-Doc` [正式开源](https://github.com/PaddlePaddle/ERNIE/tree/repro/ernie-doc)
       - 融合场景图知识的跨模态预训练模型`ERNIE-ViL` [正式开源](https://github.com/PaddlePaddle/ERNIE/tree/repro/ernie-vil)
-      - 语言与视觉一体的预训练模型`ERNIE-UNIMO` 将于[近期开源](./ernie-unimo/)
+      - 语言与视觉一体的预训练模型`ERNIE-UNIMO` [正式开源](https://github.com/PaddlePaddle/ERNIE/tree/repro/ernie-unimo)
 
 - 2020.12.29:
    - `ERNIE`开源工具套件全面升级 [PaddlePaddle v2.0](https://github.com/PaddlePaddle/Paddle/tree/release/2.0-rc)