templates/rules: fix typo

Signed-off-by: Sumner Evans <me@sumnerevans.com>

website/templates/rules.html

@@ -22,7 +22,7 @@ <h2>Teams</h2>
         Teams can be made up of students from different schools as long as all students
 	      and faculty sponsors agree.
       </p>
-      <h2>Internet Access & Code Generation</h2>
+      <h2>Internet Access &amp; Code Generation</h2>
       <p>
         This competition is <b>open-internet</b> for in-person and remote participants. You may use
         the internet for looking up language documentation or researching algorithms. You may