output is to a file not a raster

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@55123 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.out.arc/main.c

@@ -65,7 +65,7 @@ int main(int argc, char *argv[])
     /* Define the different options */
     parm.map = G_define_standard_option(G_OPT_R_INPUT);
 
-    parm.output = G_define_standard_option(G_OPT_R_OUTPUT);
+    parm.output = G_define_standard_option(G_OPT_F_OUTPUT);
     parm.output->description =
 	_("Name for output ARC-GRID file (use out=- for stdout)");