preview form investigator (#30328)

Co-authored-by: Brett Blue <84536271+brett0000FF@users.noreply.github.com>

Author: dussault-antoine

content/en/tracing/guide/latency_investigator.md

@@ -7,8 +7,8 @@ further_reading:
   text: "Datadog APM"
 ---
 
-{{< callout url="" btn_hidden="true" header="Request access to the Preview!" >}}
-APM Investigator is in Preview. To request access, contact <a href="/help/">Datadog Support</a>.
+{{< callout url="https://www.datadoghq.com/product-preview/apm-investigator/" header="Request access to the Preview!" >}}
+APM Investigator is in Preview. To request access, fill out this form.
 {{< /callout >}}
 
 ## Overview