homogenize keywords

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@52974 15284696-431f-4ddb-bdfa-cd5b030d7da7

visualization/nviz/nviz.html

@@ -13,7 +13,7 @@
 <em><b>nviz</b></em>  - nviz - Visualization and animation tool for GRASS data
 
 <h2>KEYWORDS</h2>
-raster, vector, visualization
+visualization, graphics, raster, raster3d, vector, display
 
 <h2>SYNOPSIS</h2>
 <b>nviz</b><br>