Added new article layout template that will be rendered inside a page template.

Added an alias for the new article layout to Eleventy config

.eleventy.js

@@ -6,6 +6,8 @@ module.exports = function(eleventyConfig) {
   eleventyConfig.addPlugin(eleventyNavigationPlugin)
 
   eleventyConfig.addLayoutAlias('page', 'layouts/page')
+  eleventyConfig.addLayoutAlias('article', 'layouts/article')
+
   eleventyConfig.addFilter('readableDate', dateObj => {
     return DateTime.fromJSDate(dateObj, {
       zone: "Europe/Paris",

src/_includes/layouts/article.njk

@@ -0,0 +1,11 @@
+---
+layout: page
+---
+
+<article>
+  <h1>{{ title }}</h1>
+  <small>
+    Published: <time>{{ date | readableDate }}</time>
+  </small>
+  {{ content | safe }}
+</article>