Minor fix for project page.

mainline/doc/project.html

@@ -40,7 +40,7 @@ along with Metrix++. If not, see <http://www.gnu.org/licenses/>.
       <td><img src="logo_project.png" alt="Software Index Project Page" /></td>
       <td valign="top">
         <div align="right">
-        <p></p>
+        <p>&nbsp;</p>
 
         <p align="center"><a href="http://sourceforge.net/projects/swi"
         class="lowImportance"><img