Rename Jenkins annotation

plugins/jenkins/README.md

@@ -63,7 +63,7 @@ metadata:
   name: 'your-component'
   description: 'a description'
   annotations:
-    backstage.io/jenkins-github-folder: 'folder-name/job-name'
+    jenkins.io/github-folder: 'folder-name/job-name'
 spec:
   type: service
   lifecycle: experimental

plugins/jenkins/src/components/JenkinsPluginWidget/JenkinsBuildsWidget.tsx

@@ -20,7 +20,7 @@ import { Entity } from '@backstage/catalog-model';
 
 export const JenkinsBuildsWidget = ({ entity }: { entity: Entity }) => {
   const [owner, repo] = (
-    entity?.metadata.annotations?.['backstage.io/jenkins-github-folder'] ?? '/'
+    entity?.metadata.annotations?.['jenkins.io/github-folder'] ?? '/'
   ).split('/');
 
   return <Builds owner={owner} repo={repo} />;

plugins/jenkins/src/components/JenkinsPluginWidget/JenkinsLastBuildWidget.tsx

@@ -68,7 +68,7 @@ export const JenkinsLastBuildWidget = ({
   branch: string;
 }) => {
   const [owner, repo] = (
-    entity?.metadata.annotations?.['backstage.io/jenkins-github-folder'] ?? '/'
+    entity?.metadata.annotations?.['jenkins.io/github-folder'] ?? '/'
   ).split('/');
   const [{ loading, value }] = useBuilds(owner, repo, branch);