doc: improve star conversion rate

README.md

@@ -99,3 +99,8 @@ CNCF Database Landscape.</a>
 ## Community
 
 [![Discussions](https://img.shields.io/badge/GitHub_Discussion-000000?style=for-the-badge&logo=github&logoColor=white)](https://github.com/vesoft-inc/nebula/discussions) [![Slack](https://img.shields.io/badge/Slack-9F2B68?style=for-the-badge&logo=slack&logoColor=white)](https://join.slack.com/t/nebulagraph/shared_invite/zt-7ybejuqa-NCZBroh~PCh66d9kOQj45g) [![Zoom](https://img.shields.io/badge/Zoom-2D8CFF?style=for-the-badge&logo=zoom&logoColor=white)](https://us02web.zoom.us/meeting/register/tZ0rcuypqDMvGdLuIm4VprTlx96wrEf062SH) [![Google Calendar](https://img.shields.io/badge/Calander-4285F4?style=for-the-badge&logo=google&logoColor=white)](https://calendar.google.com/calendar/u/0?cid=Z29mbGttamM3ZTVlZ2hpazI2cmNlNXVnZThAZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ) [![Meetup](https://img.shields.io/badge/Meetup-FF0000?style=for-the-badge&logo=meetup&logoColor=white)](https://www.meetup.com/nebulagraph/events/287180186?utm_medium=referral&utm_campaign=share-btn_savedevents_share_modal&utm_source=link) [![Meeting Archive](https://img.shields.io/badge/Community_wiki-808080?style=for-the-badge&logo=readthedocs&logoColor=white)](https://github.com/vesoft-inc/nebula-community/wiki) [![Discourse](https://img.shields.io/badge/中文论坛-4285F4?style=for-the-badge&logo=discourse&logoColor=white)](https://discuss.nebula-graph.com.cn/) [![Tecent_Meeting](https://img.shields.io/badge/腾讯会议-2D8CFF?style=for-the-badge&logo=googlemeet&logoColor=white)](https://meeting.tencent.com/dm/F8NX1aRZ8PQv)
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+#### If you like this repo, or it can help you, please ⭐️ Star it at the top right corner~ 
+https://github.com/vesoft-inc/nebula