Update ical_list.html "ICal" => "iCal"

aleksis/core/templates/core/ical/ical_list.html

 {% extends 'core/base.html' %}
 {% load i18n msg_box static html_helpers %}
 
-{% block page_title %}{% trans "ICal Feeds" %}{% endblock page_title %}
-{% block browser_title %}{% trans "ICal Feeds" %}{% endblock browser_title %}
+{% block page_title %}{% trans "iCal Feeds" %}{% endblock page_title %}
+{% block browser_title %}{% trans "iCal Feeds" %}{% endblock browser_title %}
 
 {% block content %}
   {% trans "These are URLs for different Calendar Feeds in the iCal (.ics) format. You can create as many as you want and import them in your calendar software." as msg %}