Typo fix and minor update opening para.

Author: hhhansenrug

student-projects/past-projects.html

@@ -15,7 +15,7 @@
     <div class="page-wrapper">
       {% include site-header.html extra=header_extra %}
       <main>
-        <p>Below are the recently completed student projects wihtin our group:</p>
+        <p>Below are the recently completed student projects within the Fundamental Computing group. Unless stated otherwise, these projects were part of the degree programmes for Computing Science at the University of Groningen.</p>
 
         {% assign completed_projects = site.data['projects-finished'] %}
         {% if completed_projects and completed_projects.size > 0 %}