Update errors-inbox.mdx

The link for the Node Agent incorrectly linked to the Java Agent's docs for setting error group callbacks. There's no specific page for this in the Node space so I changed the link to route to our docs around the API method that is used, which gives details and links to an example app further showing how to use it.

src/content/docs/errors-inbox/errors-inbox.mdx

@@ -89,7 +89,7 @@ Supported APM agents:
 * [Browser](/docs/browser/new-relic-browser/browser-apis/seterrorhandler/#fingerprinting-errors-in-handler-function)
 * [Go](/docs/apm/agents/go-agent/api-guides/guide-using-go-agent-api/#error-fingerprinting)
 * [Java](/docs/apm/agents/java-agent/api-guides/java-agent-api-register-error-group-callback-to-set-fingerprint)
-* [Node.js](/docs/apm/agents/java-agent/api-guides/java-agent-api-register-error-group-callback-to-set-fingerprint)
+* [Node.js](docs/apm/agents/nodejs-agent/api-guides/nodejs-agent-api/#setErrorGroupCallback)
 * [.Net](/docs/apm/agents/net-agent/net-agent-api/seterrorgroupcallback-net-agent-api)
 * [Python](/docs/apm/agents/python-agent/python-agent-api/seterrrorgroupcallback-python-agent-api)
 * [Ruby](/docs/apm/agents/ruby-agent/api-guides/sending-handled-errors-new-relic/#error-fingerprinting)