fix: specify go os and arch for build

Author: luxifer

tutorials/export-audit-trail-to-datadog/index.mdx

@@ -55,10 +55,10 @@ providers:
   - gomod: go.opentelemetry.io/collector/confmap/provider/yamlprovider v1.24.0
 ```
 
-Then you can build the collector by running the following command:
+Then you can build the collector by running the following command. We specify `GOOS` and `GOARCH` because the target deployment is linux with an AMD64 CPU.
 
 ```
-./ocb --config builder-config.yaml
+GOOS=linux GOARCH=amd64 ./ocb --config builder-config.yaml
 ```
 
 You will have a new folder named `otelcol-audit-trail/` with the binary compiled inside named `otelcol-audit-trail`.