[docs] fix typo in interactions heading
[docs] fix typo in interactions heading

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