Fix link in Deno instructions for operator (#5993)

Author: lucacasonato

content/en/docs/kubernetes/operator/automatic.md

@@ -220,9 +220,11 @@ the `otlpreceiver` of the Collector created in the previous step.
 
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-[Deno's OpenTelemetry integration][deno-otel-docs] is not yet stable. As a
-result all workloads that want to be instrumented with Deno must have the
-`--unstable-otel` flag set when starting the Deno process.
+[Deno's OpenTelemetry integration][deno-docs] is not yet stable. As a result all
+workloads that want to be instrumented with Deno must have the `--unstable-otel`
+flag set when starting the Deno process.
+
+[deno-docs]: https://docs.deno.com/runtime/fundamentals/open_telemetry/
 
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