Refactor calendar page (#195)

* Refactor calendar page

* Update _index.md

Author: jarrodmillman

content/en/calendars/_index.md

@@ -2,6 +2,4 @@
 title: Community Calendars 📅
 ---
 
-These are calendars for projects in the Scientific Python community.
-You can subscribe to these calendars from any calender software that
-supports ICAL.
+Subscribe from any calender software that supports ICAL by either **copying** or **downloading** the following URLs:

layouts/calendars/list.html

@@ -36,7 +36,7 @@ <h5 class="subtitle is-5 is-muted">{{ .Params.Subtitle }}</h5>
           {{ end }}
         </div>
 
-        <h3 id="subscribe-google-calendar">How to subscribe using Google Calendar</h3>
+        <h3 id="subscribe-google-calendar">Google Calendar</h3>
         Instructions from <a href="https://support.google.com/calendar/answer/37100?hl=en&co=GENIE.Platform%3DDesktop">the Google Calendar docs</a>:
         <ol>
           <li>Open Google Calendar</li>