Replace '-'s in file names with '_'s

Michigan's file hosting service doesn't like URLs with '-'s in file
names, but '-'s are fine.
Signed-off-by: Ethan Madison <ethan@ethanmad.com>

config.toml

@@ -46,7 +46,7 @@ copyright = "(c) 2016 University of Michigan Fencing Club"
 
 [[params.mainMenu]]
   name = "About Fencing"
-  link = "about-fencing"
+  link = "about_fencing"
 
 [[params.mainMenu]]
   name = "Contact"

content/schedule.md

@@ -8,5 +8,5 @@ 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>
+<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>