Added exam schedule info.

Author: janpgit

docs/index.html

@@ -115,7 +115,9 @@ <h2><a name="unix_access">Unix machine access</a></h2>
 
 <h2><a name="exams">Exams</a></h2>
 
-<p>The exam schedule will be provided at the end of the semester.
+<p>The exam schedule will be provided at the end of the semester.  We hope exams
+can be held in person but we will adjust accordingly based on the Covid-19
+situation at the time.
 
 <p><a href="exams.html">Exam rules</a>.