Add API links to readme

README.md

@@ -8,6 +8,10 @@
 [![CI](https://img.shields.io/github/actions/workflow/status/kamu-data/kamu-node/build.yaml?logo=githubactions&label=CI&logoColor=white&style=for-the-badge&branch=master)](https://github.com/kamu-data/kamu-node/actions)
 [![Chat](https://shields.io/discord/898726370199359498?style=for-the-badge&logo=discord&label=Discord)](https://discord.gg/nU6TXRQNXC)
 
+[![Docs](https://img.shields.io/static/v1?logo=gitbook&logoColor=66BBFF&label=&message=Docs&color=gray&style=for-the-badge)](https://docs.kamu.dev/node/)
+[![REST API](https://img.shields.io/static/v1?logo=openapiinitiative&logoColor=6BFF39&label=&message=REST%20API&color=gray&style=for-the-badge)](https://docs.kamu.dev/node/api/rest/)
+[![GraphQL API](https://img.shields.io/static/v1?logo=graphql&logoColor=F133A8&label=&message=GraphQL%20API&color=gray&style=for-the-badge)](https://api.demo.kamu.dev/graphql)
+
 </p>
 </div>