Fix empty author due to include.author

Regression in v2.1.1 (9c25ef7), due
to copy-paste left over from the old `authors-text.html` include where
this was passed as include argument.

Author: Krinkle

README.md

@@ -3,7 +3,7 @@
 
 # Amethyst theme
 
-This repository houses the Amethyst theme for Jekyll.
+This repository houses the Amethyst theme for [Jekyll](https://jekyllrb.com/).
 
 ## Getting started
 

_includes/opengraph.html

@@ -53,7 +53,7 @@
 {% if page.layout == "post" and page.date and page.author %}
 <meta property="og:type" content="article">
 <meta property="article:published_time" content="{{ page.date | date_to_xmlschema }}">
-<meta name="author" content="{{ site.data.authors[include.author] | default: include.author | escape }}">
+<meta name="author" content="{{ site.data.authors[page.author] | default: page.author | escape }}">
 {% endif %}
 
 {% endcapture -%}

_layouts/posts-tag.html

@@ -12,7 +12,7 @@ <h1>Tag: {{ page.title | escape }}</h1>
 	{%- for post in posts -%}
 	<div class="post-row">
 		<h2><a href="{{ post.url | relative_url }}">{{ post.title | escape }}</a></h2>
-		<p class="post-meta">Posted on <time datetime="{{ post.date | date_to_xmlschema }}">{{ post.date | date: date_format }}</time>{% if post.author %} by {{ site.data.authors[include.author] | default: include.author | escape }}{% endif %}</p>
+		<p class="post-meta">Posted on <time datetime="{{ post.date | date_to_xmlschema }}">{{ post.date | date: date_format }}</time>{% if post.author %} by {{ site.data.authors[post.author] | default: post.author | escape }}{% endif %}</p>
 		<div class="post">
 			{{- post.excerpt -}}
 			{%- if post.excerpt != post.content %}

_layouts/posts-year.html

@@ -12,7 +12,7 @@ <h1>Archive: {{ page.date | date: '%Y' }}</h1>
 	{%- for post in posts -%}
 	<div class="post-row">
 		<h2><a href="{{ post.url | relative_url }}">{{ post.title | escape }}</a></h2>
-		<p class="post-meta">Posted on <time datetime="{{ post.date | date_to_xmlschema }}">{{ post.date | date: date_format }}</time>{% if post.author %} by {{ site.data.authors[include.author] | default: include.author | escape }}{% endif %}</p>
+		<p class="post-meta">Posted on <time datetime="{{ post.date | date_to_xmlschema }}">{{ post.date | date: date_format }}</time>{% if post.author %} by {{ site.data.authors[post.author] | default: post.author | escape }}{% endif %}</p>
 		<div class="post">
 			{{- post.excerpt -}}
 			{%- if post.excerpt != post.content %}

_layouts/posts.html

@@ -13,7 +13,7 @@ <h1>{{ page.title }}</h1>
 	{% for post in posts -%}
 	<div class="post-row">
 		<h2><a href="{{ post.url | relative_url }}">{{ post.title | escape }}</a></h2>
-		<p class="post-meta">Posted on <time datetime="{{ post.date | date_to_xmlschema }}">{{ post.date | date: date_format }}</time>{% if post.author %} by {{ site.data.authors[include.author] | default: include.author | escape }}{% endif %}</p>
+		<p class="post-meta">Posted on <time datetime="{{ post.date | date_to_xmlschema }}">{{ post.date | date: date_format }}</time>{% if post.author %} by {{ site.data.authors[post.author] | default: post.author | escape }}{% endif %}</p>
 		<div class="post">
 			{{- post.excerpt -}}
 			{%- if post.excerpt != post.content %}