bpo:34848 : Correct an incorrect  docstring for range().index method (GH-9877)

(cherry picked from commit 22c526394b2ef51b985873ddbfbcc32c16411919)

Co-authored-by: Srinivas Reddy Thatiparthy (శ్రీనివాస్  రెడ్డి తాటిపర్తి) <thatiparthysreenivas@gmail.com>
diff --git a/Objects/rangeobject.c b/Objects/rangeobject.c
index 037be87..157ab81 100644
--- a/Objects/rangeobject.c
+++ b/Objects/rangeobject.c
@@ -645,7 +645,7 @@
 "rangeobject.count(value) -> integer -- return number of occurrences of value");
 
 PyDoc_STRVAR(index_doc,
-"rangeobject.index(value, [start, [stop]]) -> integer -- return index of value.\n"
+"rangeobject.index(value) -> integer -- return index of value.\n"
 "Raise ValueError if the value is not present.");
 
 static PyMethodDef range_methods[] = {