message: Fix iOS README formatting
diff: @@ -50,6 +50,7 @@ When building for the simulator, the sample will then link against the libraries
  ## Xcode
  Open up one of the Xcode projects:
  +
  - hello-ar/hello-ar.xcodeproj
  - hello-gltf/hello-gltf.xcodeproj
  - hello-pbr/hello-pbr.xcodeproj
  