T76883: Fix: Use a relative path to include the router
T76883: Fix: Use a relative path to include the router

gwicke/restbase,wikimedia/mediawiki-services-restbase,d00rman/restbase,Pchelolo/restbase,physikerwelt/restbase,wikimedia/restbase,cscott/restbase,inverno/restbase,wikimedia/hyperswitch,milimetric/restbase,eevans/restbase,eevans/restbase,gwicke/restbase,milimetric/restbase,Krenair/restbase,cscott/restbase,Pchelolo/restbase,wikimedia/mediawiki-services-restbase,d00rman/restbase,physikerwelt/restbase,Krenair/restbase,inverno/restbase,wikimedia/restbase