chore: remove getting started and link to documentation. (#2493)

Co-authored-by: Valentin Marchaud <[email protected]>

Author: svrnm

README.md

@@ -2,7 +2,7 @@
 ---
 <p align="center">
   <strong>
-    <a href="https://github.com/open-telemetry/opentelemetry-js/blob/main/getting-started/README.md">Getting Started</a>
+    <a href="https://opentelemetry.io/docs/js/getting_started/">Getting Started</a>
     &nbsp;&nbsp;&bull;&nbsp;&nbsp;
     <a href="https://open-telemetry.github.io/opentelemetry-js-api">API Reference</a>
     &nbsp;&nbsp;&bull;&nbsp;&nbsp;
@@ -131,7 +131,7 @@ process.on('SIGTERM', () => {
 node -r ./tracing.js app.js
 ```
 
-The above example will emit auto-instrumented telemetry about your Node.js application to the console. For a more in-depth example, see the [Getting Started Guide](https://github.com/open-telemetry/opentelemetry-js/blob/main/getting-started/README.md). For more information about automatic instrumentation see [@opentelemetry/sdk-trace-node][otel-node], which provides auto-instrumentation for Node.js applications. If the automatic instrumentation does not suit your needs, or you would like to create manual traces, see [@opentelemetry/sdk-trace-base][otel-tracing]
+The above example will emit auto-instrumented telemetry about your Node.js application to the console. For a more in-depth example, see the [Getting Started Guide](https://opentelemetry.io/docs/js/getting_started/). For more information about automatic instrumentation see [@opentelemetry/sdk-trace-node][otel-node], which provides auto-instrumentation for Node.js applications. If the automatic instrumentation does not suit your needs, or you would like to create manual traces, see [@opentelemetry/sdk-trace-base][otel-tracing]
 
 ### Library Author