Fix documentation of configuring table_name

[elazar]

This example references the setting store.table_name, but using this setting causes an error to be emitted.

Unrecognized option "table_name" under "patchlevel_event_sourcing.store". Available
options are "merge_orm_schema", "options".

It appears this example should reference store.options.table_name instead; doing so avoids the above error. This also appears to be corroborated by discrepancies elsewhere in the codebase, specifically here and here.

[DanielBadura]

Yes this is wrong documented. Could you change the target to 3.0.x? Then the docs are updated there too. Thank you.

[elazar]

Yes this is wrong documented. Could you change the target to 3.0.x? Then the docs are updated there too. Thank you.

Done. Thank you! 🙏