Restore the document metadata dropped when the pages were ported

src/site/markdown/examples/aggregate.md.vm

@@ -1,3 +1,10 @@
+---
+title: Aggregating PMD reports for Multi-Module-Projects
+author: 
+  - Andreas Dangel
+date: 2021-09-03
+---
+
 <!--
 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file

src/site/markdown/examples/cpdCsharp.md.vm

@@ -1,3 +1,10 @@
+---
+title: Finding duplicated code in C#
+author: 
+  - Andreas Dangel
+date: 2020-10-02
+---
+
 <!--
 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file

src/site/markdown/examples/differentRulesetForTests.md.vm

@@ -1,3 +1,10 @@
+---
+title: Using a different ruleset for tests
+author: 
+  - Andreas Dangel
+date: 2021-07-09
+---
+
 <!--
 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file

src/site/markdown/examples/javascriptReport.md.vm

@@ -1,3 +1,10 @@
+---
+title: Analyzing JavaScript Code
+author: 
+  - Andreas Dangel
+date: 2017-11-11
+---
+
 <!--
 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file

src/site/markdown/examples/jspReport.md.vm

@@ -1,3 +1,10 @@
+---
+title: Analyzing JSP Code
+author: 
+  - Thomas Williamson
+date: 2017-11-11
+---
+
 <!--
 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file

src/site/markdown/examples/multi-module-config.md.vm

@@ -1,3 +1,8 @@
+---
+title: Multimodule Configuration
+date: 2017-11-11
+---
+
 <!--
 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file

src/site/markdown/examples/removeReport.md.vm

@@ -1,3 +1,10 @@
+---
+title: Remove Report
+author: 
+  - Dennis Lundberg
+date: 2021-09-03
+---
+
 <!--
 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file

src/site/markdown/examples/targetJdk.md.vm

@@ -1,3 +1,11 @@
+---
+title: Target JDK and Toolchains
+author: 
+  - Dennis Lundberg
+  - Andreas Dangel
+date: 2020-10-02
+---
+
 <!--
 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file

src/site/markdown/examples/upgrading-PMD-at-runtime.md.vm

@@ -1,3 +1,10 @@
+---
+title: Upgrading PMD at Runtime
+author: 
+  - Andreas Dangel
+date: 2017-08-19
+---
+
 <!--
 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file

src/site/markdown/examples/usingRuleSets.md.vm

@@ -1,3 +1,10 @@
+---
+title: Using Rule Sets
+author: 
+  - Maria Odea Ching
+date: 2018-01-10
+---
+
 <!--
 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file

src/site/markdown/examples/violation-exclusions.md.vm

@@ -1,3 +1,9 @@
+---
+title: Violation Exclusions
+author: 
+  - 2013-02-08
+---
+
 <!--
 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file

src/site/markdown/examples/violationChecking.md.vm

@@ -1,3 +1,9 @@
+---
+title: Violation Checking
+author: 
+  - 2006-06-23
+---
+
 <!--
 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file

src/site/markdown/index.md.vm

@@ -1,3 +1,10 @@
+---
+title: Introduction
+author: 
+  - Dennis Lundberg
+date: 2017-11-11
+---
+
 <!--
 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file

src/site/markdown/usage.md.vm

@@ -1,3 +1,10 @@
+---
+title: Usage
+author: 
+  - Maria Odea Ching
+date: 2017-11-11
+---
+
 <!--
 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file