Update general-contact email address

We have replaced fencingofficers15@umich.edu with
fencingofficers@umich.edu, which we will continue to use in future
years.

This solves the issue of changing email addresses annually.
Signed-off-by: Ethan Madison <ethan@ethanmad.com>

content/contact.md

@@ -14,7 +14,7 @@ We'd love to hear from you! If you have a question, you can ask any of our offic
 <div class="col-md-6">
 <div class="alert alert-info" role="alert">
     Have general inquiry questions?
-    Email us at <a href="mailto:fencingofficers15@umich.edu" class="alert-link">fencingofficers15@umich.edu</a>.
+    Email us at <a href="mailto:fencingofficers@umich.edu" class="alert-link">fencingofficers@umich.edu</a>.
 </div>
 </div>