Convert site to Hugo (#8316)

This commit converts content and layout to use Hugo.

content/en/docs/tasks/example-task-template.md

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+---
+title: Example Task Template
+reviewers:
+- chenopis
+content_template: templates/task
+---
+
+{{% capture overview %}}
+
+**NOTE:** Be sure to also [create an entry in the table of contents](/docs/home/contribute/write-new-topic/#creating-an-entry-in-the-table-of-contents) for your new document.
+
+This page shows how to ...
+
+{{% /capture %}}
+
+{{% capture prerequisites %}}
+
+* {{< include "task-tutorial-prereqs.md" >}} {{< version-check >}}
+* Do this.
+* Do this too.
+
+{{% /capture %}}
+
+{{% capture steps %}}
+
+## Doing ...
+
+1. Do this.
+1. Do this next. Possibly read this [related explanation](...).
+
+{{% /capture %}}
+
+{{% capture discussion %}}
+
+## Understanding ...
+**[Optional Section]**
+
+Here's an interesting thing to know about the steps you just did.
+
+{{% /capture %}}
+
+{{% capture whatsnext %}}
+
+**[Optional Section]**
+
+* Learn more about [Writing a New Topic](/docs/home/contribute/write-new-topic/).
+* See [Using Page Templates - Task template](/docs/home/contribute/page-templates/#task_template) for how to use this template.
+
+{{% /capture %}}
+
+