group.c: Fix docstring keyword for `G.checkgroup'.

diff --git a/group.c b/group.c
index cc8bbc1..8921cce 100644 (file)
--- a/group.c
+++ b/group.c
@@ -1079,7 +1079,7 @@ static PyMethodDef group_pymethods[] = {
 #define METHNAME(name) gmeth_##name
   METH (mexp,          "\
 G.mexp([(X0, N0), (X1, N1), ...]) -> X0^N0 X1^N1 ...")
-  KWMETH(checkgroup,   "G.checkgroup(rand = random): check group is good")
+  KWMETH(checkgroup,   "G.checkgroup(rng = rand): check group is good")
 #undef METHNAME
   { 0 }
 };