docs: update whitelabel pictures and instructions (#31)

* Update perks.md

* Update perks.md

* Update perks.md

* Picture update

* rename

* Update commands.md

* Update commands.md

* Update settings.md

* Update forms.md

* Update forms.md

* Update multipanels.md

* Update multipanels.md

* Update reaction-panels.md

* Update reaction-panels.md

* Update tags.md

* Update tags.md

* Update configuration.md

* Update languages.md

* update welcome_message

* added back

* fix

* update whitelable guide pictures and instructions