Update Geometry Collection JSDocs (#472)
Update Geometry Collection JSDocs (#472)

Updated example
- proper function name `geometryCollection`
- Added unused variables
Turfjs/turf,dpmcmlxxvi/turf,stebogit/turf,jvrousseau/turf,ath0mas/turf,tilemapjp/turf,Turfjs/turf,hooplert/jesper,ath0mas/turf,dpmcmlxxvi/turf,jvrousseau/turf,jvrousseau/turf,dpmcmlxxvi/turf,stebogit/turf,hooplert/jesper,tilemapjp/turf,stebogit/turf,tilemapjp/turf,hooplert/jesper,Turfjs/turf