[JENKINS-37862] Category for build-symlink (#270)

* Category for build-symlink

* Offer a link to make it easy to edit label-definitions.properties

README.md

@@ -36,7 +36,7 @@ Jenkins groups plugins into various categories in the plugin manager.
 
 These categories historically were labels on the plugins' wiki page with Jenkins applying localization on the raw label value, if defined.
 To remove the need to scrape wiki pages in this tool, we've changed this behavior, and plugins now have the labels defined in this repository.
-See the file `src/main/resources/label-definitions.properties` for the plugin/label assignments.
+See [`label-definitions.properties`](https://github.com/jenkins-infra/update-center2/edit/master/src/main/resources/label-definitions.properties) for the plugin/label assignments.
 
 See https://github.com/jenkinsci/jenkins/blob/master/core/src/main/resources/hudson/model/Messages.properties (look for `UpdateCenter.PluginCategory`) for the localization overrides Jenkins applies.
 

src/main/resources/label-definitions.properties

@@ -113,6 +113,7 @@ build-monitor-plugin=view report ui
 build-name-setter=buildwrapper
 build-pipeline-plugin=builder post-build ui
 build-publisher=upload
+build-symlink=misc
 build-time-blame=report ui
 build-timeout=buildwrapper
 build-timestamp=buildwrapper