Remove experimental flag on GitHub Discussions

Author: vy

src/site/asciidoc/support.adoc

@@ -32,7 +32,7 @@ If you have questions like:
 We urge you to first check our link:faq.html[FAQ] to see if it has already been answered.
 If not, you can ask your questions on one of our official user support channels:
 
-* https://github.com/apache/logging-log4j2/discussions[GitHub Discussions] (**experimental**)
+* https://github.com/apache/logging-log4j2/discussions[GitHub Discussions]
 * `[email protected]` mailing list (public | mailto:[email protected][subscribe] | mailto:[email protected][unsubscribe] | mailto:[email protected][post] | https://lists.apache.org/list.html?log4j-user@logging.apache.org[archive])
 
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