r.param.scale manual: example fix

git-svn-id: https://svn.osgeo.org/grass/grass/branches/releasebranch_7_0@70056 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.param.scale/r.param.scale.html

@@ -74,7 +74,7 @@ The next commands will create a geomorphological map of the Spearfish region:
 
 <div class="code"><pre>
 g.region raster=elevation.10m -p
-r.param.scale in=elevation.10m output=morphology param=feature size=9
+r.param.scale in=elevation.10m output=morphology method=feature size=9
 </pre></div>
 
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