v.outlier: add missing 6.4 compatibility option

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@66238 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/gis/renamed_options

@@ -633,6 +633,7 @@ v.out.vtk|scale:zscale
 # v.outlier
 v.outlier|soe:ew_step
 v.outlier|son:ns_step
+v.outlier|lambda_i:lambda
 v.outlier|thres_o:threshold
 # v.qcount
 v.qcount|n:nquadrats