[#4] update branches api documentation (#20)

* [#4] update branches api documentation

* [#3] Update Regions Documentation and add a figure of regions table (#16)

* [#3] Update Regions Documentation and add a figure of regions table

* [#3] Update Region Documentation based on review

* [#3] Update Region Documentation based on 2nd review

* [#3] add region code must be unique and remove the last line that does not need comma

* [#3] Update region-layer

* [#3] Rename regions.png to region-layer.png

* [#3] Remove company_code and kunci from regions table

* [#4] update branches api documentation

* [#4] update endpoint and field branches api

* [#4] update branches api documentation

* [#4] update param query and positive case

* [#4] add query param description with table

Co-authored-by: Muhammad Sofi Yuniarto <[email protected]>