Minor language tweaks in the exam rules.

Author: janpgit

docs/exams.html

@@ -115,15 +115,13 @@ <h3>Evaluation</h3>
 </ul>
 
 <p>
-The evaluation of the oral exam is based on answers for 2 questions.
-If the resulting evaluation is worse than C, it means failed attempt.
+The evaluation of the oral exam is based on answers to 2 questions.  If the
+resulting evaluation is worse than C (i.e. &gt; 3), it means a failed attempt.
 </p>
 
-<p>
-The overall evaluation is composed from the evaluation of the program
-and oral exam.
-<b>both need to be max C.</b> If there is any doubt, the oral examination
-will decide.
+<p>The overall evaluation is composed from the evaluation of the program and
+oral exam. <b>Both need to be max C (= 3).</b> If there is any doubt, the oral
+examination will decide.
 </p>
 
 <p><hr>