Use "x" instead of "i" for s.index and s.count entries in sequence ops table.
Suggested by Bruce Esrig on docs@.
diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
index 442a214..b474114 100644
--- a/Doc/library/stdtypes.rst
+++ b/Doc/library/stdtypes.rst
@@ -754,11 +754,11 @@
+------------------+--------------------------------+----------+
| ``max(s)`` | largest item of *s* | |
+------------------+--------------------------------+----------+
-| ``s.index(i)`` | index of the first occurrence | |
-| | of *i* in *s* | |
+| ``s.index(x)`` | index of the first occurrence | |
+| | of *x* in *s* | |
+------------------+--------------------------------+----------+
-| ``s.count(i)`` | total number of occurrences of | |
-| | *i* in *s* | |
+| ``s.count(x)`` | total number of occurrences of | |
+| | *x* in *s* | |
+------------------+--------------------------------+----------+
Sequence types also support comparisons. In particular, tuples and lists