fix name

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@35079 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.sun2/r.sun.html

@@ -202,7 +202,7 @@ r.horizon elevin=elevation.dem step=30 bufferzone=200 horizon=horangle dist=0.7
 r.slope.aspect elevation=elevation.dem aspect=aspect.dem slope=slope.dem
 
 # calculate global radiation for day 180 at 14:00hs
-r.sun2 -s elevation.dem horizon=horangle horizonstep=30 aspin=aspect.dem \
+r.sun -s elevation.dem horizon=horangle horizonstep=30 aspin=aspect.dem \
           slopein=slope.dem glob_rad=global_rad day=180 time=14
 </pre></div>