Fix updates template.

Signed-off-by: Zelin Cai <zelin@makerdiary.com>

Author: caizelin

docs/.overrides/blog.html

@@ -119,6 +119,7 @@ <h2><a href="{{ post.url | url }}" class="toclink">{{ post.meta.title }}</a></h2
                   {% if post.config.readtime %}
                     {% set time = post.config.readtime %}
                     <div class="md-meta__item">
+                      <span class="twemoji">{% include ".icons/octicons/clock-24.svg" %}</span>
                       {% if time == 1 %}
                         {{ lang.t("readtime.one") }}
                       {% else %}

docs/.overrides/home.html

@@ -242,6 +242,7 @@ <h2><a href="{{ post.url | url }}" class="toclink">{{ post.title }}</a></h2>
                       {% if post.readtime %}
                         {% set time = post.readtime %}
                         <div class="md-meta__item">
+                          <span class="twemoji">{% include ".icons/octicons/clock-24.svg" %}</span>
                           {% if time == 1 %}
                             {{ lang.t("readtime.one") }}
                           {% else %}