t.vect.export: use standardized options (https://trac.osgeo.org/grass/ticket/2409)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@63091 15284696-431f-4ddb-bdfa-cd5b030d7da7

temporal/t.vect.export/t.vect.export.py

@@ -28,7 +28,7 @@
 #%end
 
 #%option G_OPT_M_DIR
-#% key: workdir
+#% key: directory
 #% description: Path to the work directory, default is /tmp
 #% required: no
 #% answer: /tmp