update readme

Author: devksingh4

README.md

@@ -8,3 +8,5 @@ This repository is split into multiple parts:
 You will need node>=22 installed, as well as the AWS CLI and the AWS SAM CLI. The best way to work with all of this is to open the environment in a container within your IDE (VS Code should prompt you to do so: use "Clone in Container" for best performance). This container will have all needed software installed.
 
 Then, run `make install` to install all packages, and `make local` to start the UI and API servers! The UI will be accessible on `http://localhost:5173/` and the API on `http://localhost:8080/`.
+
+See the [README for the API server](src/api/README.md) as well.