Update timetable.html

to be same with line #63

aleksis/apps/chronos/templates/chronos/timetable.html

@@ -81,7 +81,7 @@
         <a class="waves-effect waves-light btn-flat no-print"
           href="{% url "week_view_by_week" year=week.year week=week.week %}">
           <i class="material-icons iconify left" data-icon="mdi:book-open"></i>
-          {% trans "View class register of the current week" %}
+          {% trans "View class register of this week" %}
         </a> 
       {% endif %}
     {% endif %}