[website_docs] Link to website page via path (#2397)

* [website_docs] Link to website page via path

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

* Make links relative and wrap paragraph text

Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>

website_docs/getting-started.md

@@ -529,6 +529,14 @@ Excellent! The application no longer returns wrong values, and looking at the te
 
 # What's Next
 
-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.
+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]({{< relref "instrumentation" >}})
+documentation. Likewise, advanced topics about processing and exporting
+telemetry data can be found in the [Processing and Exporting Data]({{< relref
+"exporting_data" >}}) documentation.