docs(README.md): update doc link of API service

Signed-off-by: Bofu Chen (bafu) <[email protected]>

Author: bafu

README.md

@@ -1,6 +1,6 @@
 # Nit
 
-Nit is git for web3 digital asset and helps user to commit an asset's activities (chronicle) to blockchain. Please note, this repository is for nit open-source tools. If you are looking for accessing nit via API services, please visit [this wiki](https://github.com/numbersprotocol/enterprise-service/wiki/7.-Nit,-Native-Protocol-Tool) for more details.
+Nit is git for web3 digital asset and helps user to commit an asset's activities (chronicle) to blockchain. Please note, this repository is for nit open-source tools. If you are looking for accessing nit via API services, please visit [here](https://docs.numbersprotocol.io/developers/commit-asset-history/commit-via-api) for more details.
 
 ## Why Nit