Clarified demo examples, clearly marking unclassified as a root element to avoid confusion

demos/artifactory/README.md

@@ -5,6 +5,7 @@ Artifactory plugin configuration belongs under `jenkins` root element
 ## sample configuration
 
 ```yaml
+jenkins: [...]
 unclassified:
   [...]
   artifactorybuilder:

demos/github/README.md

@@ -5,6 +5,7 @@ Basic configuration of the [GitHub plugin](https://wiki.jenkins.io/display/JENKI
 ## sample configuration
 
 ```yaml
+jenkins: [...]
 unclassified:
   githubpluginconfig:
     configs:

demos/gitlab/README.md

@@ -3,6 +3,7 @@
 ## sample configuration
 
 ```yaml
+jenkins: [...]
 credentials:
   system:
     ? # "global"

demos/gitscm/README.md

@@ -5,6 +5,7 @@ Basic configuration of gitscm
 ## sample configuration
 
 ```yaml
+jenkins: [...]
 unclassified:
   gitscm:
     globalConfigName: jenkins

demos/jenkins/jenkins.yaml

@@ -4,30 +4,6 @@ jenkins:
   scmCheckoutRetryCount: 2
   mode: NORMAL
 
-  globalLibraries:
-    libraries:
-      - name: "awesome-lib"
-        retriever:
-          modernSCM:
-            scm:
-              git:
-                remote: "https://github.com/jenkins-infra/pipeline-library.git"
-
-  teampluginglobalconfig:
-    collectionConfigurations:
-      - collectionUrl: http://test.com
-        credentialsId: tfsCredentials
-    enableTeamPushTriggerForAllJobs: true
-    enableTeamStatusForAllJobs: true
-    #userAccountMapper:
-    configFolderPerNode: true
-
-  mailer:
-    adminAddress: admin@acme.org
-    replyToAddress: do-not-reply@acme.org
-    smtpHost: smtp.acme.org
-    smtpPort: 4441
-
   clouds:
     - docker:
         name: "docker"
@@ -63,3 +39,28 @@ tool:
 security:
     remotingCLI:
           enabled: false
+
+unclassified:
+  globalLibraries:
+    libraries:
+      - name: "awesome-lib"
+        retriever:
+          modernSCM:
+            scm:
+              git:
+                remote: "https://github.com/jenkins-infra/pipeline-library.git"
+
+  teampluginglobalconfig:
+    collectionConfigurations:
+      - collectionUrl: http://test.com
+        credentialsId: tfsCredentials
+    enableTeamPushTriggerForAllJobs: true
+    enableTeamStatusForAllJobs: true
+    #userAccountMapper:
+    configFolderPerNode: true
+
+  mailer:
+    adminAddress: admin@acme.org
+    replyToAddress: do-not-reply@acme.org
+    smtpHost: smtp.acme.org
+    smtpPort: 4441

demos/mailer/README.md

@@ -5,8 +5,8 @@ Mailer plugin configuration belongs under `jenkins` root element
 ## sample configuration
 
 ```yaml
-unclassified:
-  [...]
+jenkins: [...]
+unclassified:  
   mailer:
     adminAddress: admin@acme.org
     replyToAddress: do-not-reply@acme.org

demos/sonarqube/README.md

@@ -4,8 +4,8 @@
 Sample configuration for the SonarQube plugin
 
 ```yaml
+jenkins: [...]
 unclassified:
-
   sonarglobalconfiguration:     # mandatory
     installations:              # mandatory
       - Sonar566:

demos/tfs/README.md

@@ -5,8 +5,8 @@ TFS plugin configuration belongs under `jenkins` root element
 ## sample configuration
 
 ```yaml
-jenkins:
-  [...]
+jenkins: [...]
+unclassified:
   teampluginglobalconfig:
     collectionConfigurations:
       - collectionUrl: http://test.com

demos/warnings/README.md

@@ -5,6 +5,7 @@ Supported in plugin **version >= 4.66**
 ## sample-configuration (Example parser from help)
 
 ```yaml
+jenkins: [...]
 unclassified:
   warnings:
     parsers:

demos/workflow-cps-global-lib/README.md

@@ -5,6 +5,7 @@ Global Pipeline Libraries plugin configuration belongs under `jenkins` root elem
 ## sample configuration
 
 ```yaml
+jenkins: [...]
 unclassified:
   globalLibraries:
     libraries: