adjust manual

raster/r.geomorphon/r.geomorphon.html

@@ -101,10 +101,9 @@ <h3>Forms represented by geomorphons:</h3>
 and it includes assorted values describing the computation context and
 parameters, as well as its intermediate and final results.</DD>
 <DT><b>profileformat</b></DT>
-<DD>Format of the profile data: "json" (the default),
-"yaml" or "xml".</DD>
+<DD>Format of the profile data: "json", "yaml" or "xml".</DD>
 </DL>
-<P><em>NOTE: parameters below are very experimental. The usefulness of these parameters are currently under investigation.</em></P>
+<P><em>NOTE: parameters below are experimental. The usefulness of these parameters are currently under investigation.</em></P>
 <DL>
 <DT><b>intensity</b></DT>
 <DD>returns avarage difference between central cell of geomorphon and eight cells in visibility neighbourhood. This parameter shows local (as is visible) exposition/abasement of the form in the terrain.</DD>