[website_docs] Link to website page via path

Contributes to open-telemetry/opentelemetry.io#922. /cc @austinlparker

website_docs/getting-started.md

@@ -531,4 +531,4 @@ Excellent! The application no longer returns wrong values, and looking at the te
 
 This guide has walked you through adding tracing instrumentation to an application and using a console exporter to send telemetry data to a file. There are many other topics to cover in OpenTelemetry, but you should be ready to start adding OpenTelemetry Go to your projects at this point. Go instrument your code!
 
-For more information about instrumenting your code and things you can do with spans, refer to the [Instrumenting](https://opentelemetry.io/docs/go/instrumentation/) documentation. Likewise, advanced topics about processing and exporting telemetry data can be found in the [Processing and Exporting Data](https://opentelemetry.io/docs/go/exporting_data/) documentation.
+For more information about instrumenting your code and things you can do with spans, refer to the [Instrumenting](/docs/go/instrumentation/) documentation. Likewise, advanced topics about processing and exporting telemetry data can be found in the [Processing and Exporting Data](/docs/go/exporting_data/) documentation.