Update README for FOSSA.

README.md

@@ -8,7 +8,7 @@
 [![](https://ossrs.net/wiki/images/wechat-badge4.svg)](../../wikis/Contact#wechat)
 [![](https://img.shields.io/twitter/follow/srs_server?style=social)](https://twitter.com/srs_server)
 [![](https://badgen.net/discord/members/yZ4BnPmHAd)](https://discord.gg/yZ4BnPmHAd)
-[![](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fossrs%2Fsrs.svg?type=shield)](https://app.fossa.com/projects/git%2Bgithub.com%2Fossrs%2Fsrs?ref=badge_shield)
+[![](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fossrs%2Fsrs.svg?type=small)](https://app.fossa.com/projects/git%2Bgithub.com%2Fossrs%2Fsrs?ref=badge_small)
 [![](https://ossrs.net/wiki/images/srs-faq.svg)](https://github.com/ossrs/srs/issues/2716)
 [![](https://badgen.net/badge/srs/stackoverflow/orange?icon=terminal)](https://stackoverflow.com/questions/tagged/simple-realtime-server)
 [![](https://opencollective.com/srs-server/tiers/badge.svg)](https://opencollective.com/srs-server/contribute)
@@ -161,7 +161,7 @@ We are grateful to the community for contributing bugfix and improvements, pleas
 
 ## LICENSE
 
-[![](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fossrs%2Fsrs.svg?type=shield)](https://app.fossa.com/projects/git%2Bgithub.com%2Fossrs%2Fsrs?ref=badge_shield)
+[![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fossrs%2Fsrs.svg?type=small)](https://app.fossa.com/projects/git%2Bgithub.com%2Fossrs%2Fsrs?ref=badge_small)
 
 SRS is licenced under [MIT](https://github.com/ossrs/srs/blob/develop/LICENSE) or [MulanPSL-2.0](https://spdx.org/licenses/MulanPSL-2.0.html),
 and note that [MulanPSL-2.0 is compatible with Apache-2.0](https://www.apache.org/legal/resolved.html#category-a),