Since _time_format=sqlite was introduced in
064df839 it has used (as described in that commit message):

> the time package format "2006-01-02 15:04:05.999999999-07:00".
> This is the format mattn/go-sqlite3 uses and is format 4 at
> https://sqlite.org/lang_datefunc.html#time_values.

A couple months later this parameter was documented in
8e27ffc8 as corresponding
to format 7 which is not and has never been the case
(format 7 has a T between the date and the time).

fix(docs): _time_format=sqlite corresponds to format 4

See merge request !91

- Enable configurable vtab options and add MATCH coverage. Expose Context.Config alongside EnableConstraintSupport, wire sqlite3_vtab_config through vtab create/connect, and document the new hook. Add a unit test ensuring MATCH constraints work when enabled.