add config docs for services

docs/extensions/auth-machine/_index.md

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+---
+title: Auth-Machine
+date: 2022-03-02T00:00:00+00:00
+weight: 20
+geekdocRepo: https://github.com/owncloud/ocis
+geekdocEditPath: edit/master/docs/extensions/auth-machine
+geekdocFilePath: _index.md
+geekdocCollapseSection: true
+---
+
+## Abstract
+
+
+## Table of Contents
+
+{{< toc-tree >}}

docs/extensions/auth-machine/configuration.md

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+---
+title: Service Configuration
+date: 2018-05-02T00:00:00+00:00
+weight: 20
+geekdocRepo: https://github.com/owncloud/ocis
+geekdocEditPath: edit/master/docs/extensions/auth-machine
+geekdocFilePath: configuration.md
+geekdocCollapseSection: true
+---
+
+## Example YAML Config
+
+{{< include file="extensions/_includes/auth-machine-config-example.yaml"  language="yaml" >}}
+
+{{< include file="extensions/_includes/auth-machine_configvars.md" >}}