fixed typo

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@7186 71c3de6d-444a-0410-be80-ed276b4c234a

war/resources/help/security/global-matrix.html

@@ -2,8 +2,8 @@
   In this scheme, you can configure who can do what by using a big table.
 
   <p>
-  Each column represents a permission. Hover the mouse over the permission name to get
-  more information about what they represen.
+  Each column represents a permission. Hover the mouse over the permission names to get
+  more information about what they represent.
 
   <p>
   Each row represents a user or a group (often called 'role', depending on the security realm.)