gh-95432: Fixup sqlite3 tutorial example (#95431)

- the insert statement should have five placeholders, not four
- missing ... in the multiline row list

Author: erlend-aasland

Doc/library/sqlite3.rst

@@ -79,11 +79,11 @@ Now, let us insert three more rows of data,
 using :meth:`~Cursor.executemany`::
 
    >>> data = [
-       ('2006-03-28', 'BUY', 'IBM', 1000, 45.0),
-       ('2006-04-05', 'BUY', 'MSFT', 1000, 72.0),
-       ('2006-04-06', 'SELL', 'IBM', 500, 53.0),
-   ]
-   >>> cur.executemany('INSERT INTO stocks VALUES(?, ?, ?, ?)', data)
+   ...    ('2006-03-28', 'BUY', 'IBM', 1000, 45.0),
+   ...    ('2006-04-05', 'BUY', 'MSFT', 1000, 72.0),
+   ...    ('2006-04-06', 'SELL', 'IBM', 500, 53.0),
+   ... ]
+   >>> cur.executemany('INSERT INTO stocks VALUES(?, ?, ?, ?, ?)', data)
 
 Then, retrieve the data by iterating over the result of a ``SELECT`` statement::