Fix #622 Encourage users to ask for missing extensions and to help im…

…plementing them

docs/modules/ROOT/pages/list-of-camel-quarkus-extensions.adoc

@@ -1,7 +1,16 @@
 [list-of-camel-quarkus-extensions]
 = List of Apache Camel extensions for Quarkus
 
-As of Camel Quarkus {camel-quarkus-last-release} the following Camel artifacts are supported on Quarkus:
+As of Camel Quarkus {camel-quarkus-last-release} Camel artifacts listed below are supported on Quarkus.
+
+TIP: In case you are missing some Camel feature in the list:
++
+* Upvote https://github.com/apache/camel-quarkus/issues[an existing issue] or create
+  https://github.com/apache/camel-quarkus/issues/new[a new one] so that we can better priorize our work.
+* You may also want to try to add the extension yourself following our xref:contributor-guide.adoc[Contributor guide].
+* You may try your luck using the given camel component on Quarkus directly (without an extension). Most probably it
+  will work in the JVM mode and fail in the native mode. Do not hesitate to
+  https://github.com/apache/camel-quarkus/issues[report] any issues you encounter.
 
 == Camel Components