Correct calendar source on Schedule

Forgot to update this with 30c7f004

. Content pages, as far as I know, can
not use templating, which, in addition to forgetfulness, caused this
problem.
Signed-off-by: Ethan Madison <ethan@ethanmad.com>

config.toml

@@ -10,8 +10,9 @@ copyright = "(c) 2016 University of Michigan Fencing Club"
   image = "img/2016cfcawards.jpg"
   themeColor = "#003e78"
 
-  # Google Calendar ID used to embed agenda in sidebar and calendar on Schedule page
-  # If changing this, make sure to update `content/add_calendar.md`.
+  # Google Calendar ID used to embed agenda in sidebar.
+  # If changing this, make sure to update `content/schedule.md` and
+  #   `content/add_calendar.md`.
   calendarId = "umich.edu_toeb19ptci3123vprh6464i308@group.calendar.google.com"
 
   practiceLocation = "the <a href='https://www.google.com/maps/place/University+of+Michigan-Sports+Coliseum/@42.2744305,-83.7456399,16z/data=!4m5!3m4!1s0x883cae3762fe5cc1:0xd3f27cff08a1643f!8m2!3d42.2720542!4d-83.7459577?hl=en' target='_blank'> IM Sports Coliseum</a>"

content/schedule.md

@@ -9,4 +9,4 @@ image = "../img/MEpeeSquad.jpg"
 +++
 
 <div class="alert alert-info" role="alert">This calendar is regularly updated with practice times, competitions, and other events. <a href="../add_calendar/" class="alert-link">Add it to your calendar</a> to stay updated.</div>
-<iframe src="https://calendar.google.com/calendar/embed?showTitle=0&amp;showPrint=0&amp;showCalendars=0&amp;height=600&amp;wkst=1&amp;bgcolor=%23FFFFFF&amp;src=eub272o1l4u2jvmm9grh0bv074%40group.calendar.google.com&amp;color=%232952A3&amp;ctz=America%2FNew_York" style="border-width:0" width="100%" height="600" frameborder="0" scrolling="no"></iframe>
+<iframe src="https://calendar.google.com/calendar/embed?showTitle=0&amp;showPrint=0&amp;showCalendars=0&amp;height=600&amp;wkst=1&amp;bgcolor=%23FFFFFF&amp;src=umich.edu_toeb19ptci3123vprh6464i308@group.calendar.google.com&amp;color=%232952A3&amp;ctz=America%2FNew_York" style="border-width:0" width="100%" height="600" frameborder="0" scrolling="no"></iframe>