docs: update Chinese and English README for OSS-GPT chat widget (#633)

* update readme

* add blank line

README.md

@@ -141,6 +141,13 @@ You can find these dashboards in:
 - **Developer's Most Participated Repos**: Developer's Most Participated Repos shows the active projects of developers in a given time period. From this graph you can find out the most active repositories for a given developer.
 - **Developer's Activity & OpenRank Trend**：The Developer Activity and OpenRank Trend chart presents how the two metrics evolve since 2015. In the chart, you can zoom and drag using your mouse or touchpad, and you can toggle either of the data by clicking the legend buttons as well.
 
+## OSS-GPT
+
+OSS-GPT is an open source project document answering robot integrated with [DocsGPT](https://github.com/arc53/docsgpt) capabilities. For an already supported project, simply open the corresponding project repository home page and ask any questions you have about that repository. You can get OSS-GPT support for your open source projects through [issue#609](https://github.com/hypertrons/hypertrons-crx/issues/609).
+<img 
+  src="https://user-images.githubusercontent.com/104072573/228414906-9c219b36-8872-41a1-b681-91f7d8d74a63.png"
+/>
+
 ## Contributing
 
 Please read [CONTRIBUTING](./CONTRIBUTING.md) if you are new here or not familiar with the basic rules of Git/GitHub world.

README.zh-CN.md

@@ -141,6 +141,14 @@ Language : [English](./README.md) | 中文
 - **活跃仓库网络图**: 活跃仓库网络图展示了在给定的时间段内，开发者的活跃项目，***用于开发者行为的追踪与挖掘***。从该网络图中，可以找出该开发者在哪些项目中活跃。
 - **开发者活跃度&OpenRank趋势图**：开发者活跃度和OpenRank趋势图显示了项目成立至今的活跃度和OpenRank这两个指标的变化。您可以利用鼠标或触控板在图表内缩放和拖拽，此外，您还可以点击Legend按钮来控制图例的显示和隐藏。
 
+## OSS-GPT
+
+OSS-GPT是集成了[DocsGPT](https://github.com/arc53/docsgpt)能力的开源项目文档问答机器人。对已经支持的项目，只需打开对应的项目仓库主页，即可询问有关于该仓库的任何问题。你可以通过[issue#609](https://github.com/hypertrons/hypertrons-crx/issues/609)以使你的开源项目获得OSS-GPT的支持。
+
+<img 
+  src="https://user-images.githubusercontent.com/104072573/228415232-cc81eab2-5566-4775-bf27-c385881deb20.png"
+/>
+
 ## 参与贡献
 
 如果你初来乍到或对 Git/GitHub 的基本操作不熟悉，请阅读[CONTRIBUTING](./CONTRIBUTING.md)。