fix feed error

_layouts/feed.ics

@@ -90,7 +90,7 @@ DURATION:{{ post.duration }}{% elsif post.end_date %}
 DTEND{{ tzid }}:{{ post.end_date | date: "%Y%m%dT%H%M00" }}{{ endtzid }}{% else %}
 DTEND:{{ post.date | date: "%Y%m%d" }}{% endif %}{% if post.rrule %}
 RRULE:{{post.rrule}}{% endif %}
-SUMMARY:{% include feed.html content=fulltitle %}
+SUMMARY:{% include collect/feed.html content=fulltitle %}
 DESCRIPTION:{%- capture mydescription -%}<p>{% if post.cal-text %}{{post.cal-text}}{% elsif post.excerpt %}{{ post.excerpt }}{% else %}{{ post.text }}{% endif %}</p>
 <ul>{% if post.time %}
 <li><b>Outage time:</b> {{ post.time }}</li>{% endif %}{% if post.systems %}