Remove last "user" from Mahara manual title

source/conf-common.py

@@ -269,7 +269,7 @@ latex_elements = {
 # One entry per manual page. List of tuples
 # (source start file, name, description, authors, manual section).
 man_pages = [
-    ('index', 'mahara', 'Mahara user manual',
+    ('index', 'mahara', 'Mahara manual',
      ['Catalyst IT and others'], 1)
 ]