[docs] fix a-isocahedron doc title (fixes #2290)
[docs] fix a-isocahedron doc title (fixes #2290)

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