imageryintro: re-activated orthophoto entry

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@71340 15284696-431f-4ddb-bdfa-cd5b030d7da7

imagery/imageryintro.html

@@ -109,11 +109,9 @@ GRASS is able to geocode raster and image data of various types:
  (<a href="i.group.html">i.group</a>, <a href="i.target.html">i.target</a>,
  <a href="g.gui.gcp.html">g.gui.gcp</a>, <a href="i.rectify.html">i.rectify</a>)</li>
 <li>interactive graphical <a href="wxGUI.gcp.html">Ground Control Point (GCP) manager</a></li>
-<!--
 <li>orthophoto generation based on DEM: <a href="i.ortho.photo.html">i.ortho.photo</a></li>
 <li>digital handheld camera geocoding: modified procedure for
     <a href="i.ortho.photo.html">i.ortho.photo</a></li>
--->
 </ul>