update projectuserdetail role descriptions

coldfront/core/project/templates/project/project_user_detail.html

@@ -58,7 +58,7 @@ <h3>Project: {{project.title}}</h3>
                 <b>Access Managers</b> have the permissions to manage group membership.<br/>
                 <b>Storage Managers</b> have the permissions to make allocation requests.<br/>
                 <b>General Managers</b> have the permissions of a PI, save the ability to assign other General Managers.<br/>
-                <b>PIs</b> have permissions to manage the project, its users, and its related allocations regardless of their assigned projectuser role.<br/>
+                <b>PIs</b> have permissions to manage the project, its users, and its related allocations.<br/>
               </td>
             </tr>
             <tr>