[docs] fix entity setattr link
[docs] fix entity setattr link

jaxmolina/ar,fernandojsg/aframe,dmarcos/aframe,googlecreativelab/aframe,mkungla/aframe,googlecreativelab/aframe,ngokevin/aframe,weddingdj/aframe,aframevr/aframe,wizgrav/aframe,weddingdj/aframe,ngokevin/aframe,dmarcos/aframe,RSpace/aframe,darkwing/aframe,chenzlabs/aframe,aframevr/aframe,fernandojsg/aframe,wizgrav/aframe,chenzlabs/aframe,mkungla/aframe,jaxmolina/ar,darkwing/aframe,RSpace/aframe