Remove BETA mention from UP (#4030) (#4033)

(cherry picked from commit 3f8b605)

Co-authored-by: Luca Belluccini <[email protected]>

docs/en/observability/observability-introduction.asciidoc

@@ -88,7 +88,7 @@ For more information, see <<monitor-uptime-synthetics,Synthetic monitoring>>.
 [float]
 [[universal-profiling-overview]]
 == Universal Profiling
-beta[] Build stack traces to get visibility into your system without application source code changes or instrumentation. Use flamegraphs to explore system performance and identify the most expensive lines of code, increase CPU resource efficiency, debug performance regressions, and reduce cloud spend.
+Build stack traces to get visibility into your system without application source code changes or instrumentation. Use flamegraphs to explore system performance and identify the most expensive lines of code, increase CPU resource efficiency, debug performance regressions, and reduce cloud spend.
 
 For more information, see <<universal-profiling,Universal Profiling>>.
 
@@ -108,4 +108,4 @@ image::images/alerts-overview.png[Summary of Alerts on the {observability} overv
 
 You can then see more details on these alerts by clicking *Show alerts*.
 
-For more information, see <<create-alerts,Alerting>>.
+For more information, see <<create-alerts,Alerting>>.