Update en_nav_extended.md
Update en_nav_extended.md
dkfiresky/smartbox,shooterok/shooterok.github.io,vmazur/smartbox,Shadealex/smartbox,shooterok/shooterok.github.io,dkfiresky/smartbox,shooterok/smartbox,vmazur/smartbox,Shadealex/smartbox,Shadealex/smartbox,shooterok/shooterok.github.io,shooterok/smartbox,vmazur/smartbox,immosmart/smartbox,shooterok/smartbox,immosmart/smartbox,immosmart/smartbox,dkfiresky/smartbox