Stop publishing openapi swagger (#30)

This PR help stop publish our swagger json files, and instead simply
point to our API reference present in the docs portal in our README.

## Description Of Change

<!-- Describe the changes you've made and why you've made them. (ex:
Fixes Issue #34) -->

## Testing Procedure

<!-- Describe how this change has been verified. Either via new
automated tests or manual testing -->

Manually verified the README.md

.gitignore

@@ -40,3 +40,5 @@ node_modules/
 
 # VSCode configuration
 .vscode
+
+docs/**/*.json

README.md

@@ -270,7 +270,7 @@ client.Ethereum.listRewards(filter).then((resp) => {
 
 ## Documentation
 
-There are numerous examples in the [`examples directory`](./examples) to help get you started. For even more, refer to our [documentation website](https://docs.cdp.coinbase.com/staking/docs/welcome) for detailed definitions, API specifications, integration guides, and more!
+There are numerous examples in the [`examples directory`](./examples) to help get you started. For even more, refer to our [documentation website](https://docs.cdp.coinbase.com/staking/docs/welcome) for detailed definitions, [API specification](https://docs.cdp.coinbase.com/staking/reference), integration guides, and more!
 
 ## Contributing