Update sqlite3.rst

Author: erlend-aasland

Doc/library/sqlite3.rst

@@ -465,7 +465,7 @@ Module constants
    :func:`connect` to look up a converter function by
    using the type name, parsed from the query column name,
    as the converter dictionary key.
-   The query column name must be wrapped in double quotes (``"``),
+   The query column name must be wrapped in double quotes (``"``)
    and the type name must be wrapped in square brackets (``[]``).
 
    .. code-block:: sql