Merge pull request #3015 from balena-io/drskullster/apps-experimental

Add a note on experimental feature flag to the apps documentation

Author: drskullster

pages/learn/develop/apps.md

@@ -4,7 +4,7 @@ title: Apps
 
 # Apps
 
-__Note:__ we’re still building out the functionality surrounding Apps; stay tuned for further developments!
+__Note:__ Apps are an experimental feature. To enable them, go to *Preferences → Experimental Options* and make sure "Display Apps" is checked.
 
 An App is a multi-container resource which can be deployed to multiple fleets. Apps are intended to offer standalone functionality and can be constructed entirely or partially from [blocks][blocks]. Apps are designed to facilitate functionality sharing between both public and private fleets. They can be published on [balenaHub][balenaHubUrl] in order to allow other users outside of your balenaCloud organization to install and utilize them on their own fleets. Apps can exist independently to solve for a complete use case.
 
@@ -129,4 +129,4 @@ The functionality for Apps we have today is only the start. Apps added via the d
 [balenaHubUrl]:{{ $links.balenaHubUrl }}/
 [deploying]:/learn/deploy/deployment
 [balenayml]:/learn/deploy/deploy-with-balena-button/#balenayml-configuration-file
-[blogUrl]:{{ $links.blogSiteUrl }}
+[blogUrl]:{{ $links.blogSiteUrl }}