fix typo in table - wrong number to ikonos

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@42889 15284696-431f-4ddb-bdfa-cd5b030d7da7

imagery/i.atcorr/i.atcorr.html

@@ -147,7 +147,7 @@ the ascendant node at equator</td>
 </tr>
 
 <tr>
-<td>11</td>
+<td>12</td>
 <td><b>ikonos</b></td>
 <td>enter month,day,hh.ddd,long.,lat. *</td>
 </tr>