Added documentation for opengraph metadata

Signed-off-by: Erik Michelson <erik@liltv.de>
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Erik Michelson 2019-10-04 19:58:02 +02:00
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@ -159,3 +159,20 @@ slideOptions:
transition: fade transition: fade
theme: white theme: white
``` ```
opengraph
---
This option allows you to override the default generated opengraph metadata.
See the [OpenGraph protocol documentation](https://ogp.me) for more information.
**Notice: always use two spaces as indention in YAML metadata!**
> default: not set (uses auto-generated metadata)
**Example**
```yml
opengraph:
title: Special title for OpenGraph protocol
image: https://dummyimage.com/600x600/000/fff
image:type: image/png
```