Fix out-of-date scene URLs in `src/_data/examples.json` file

[cvan]

should be

{
  "title": "Examples",
  "home": {
    "section": "home",
    "slug": "home",
    "scene_url": "https://aframe.io/aframe/examples/animation/aframe-logo/?ui=false",
    "source_url": "https://github.com/aframevr/aframe/blob/master/examples/animation/aframe-logo/index.html",
    "title": "A-Frame Logo Animation"
  },
  "showcase": [
    {
      "section": "showcase",
      "slug": "hello-world",
      "scene_url": "https://aframe.io/aframe/examples/boilerplate/hello-world/",
      "source_url": "https://github.com/aframevr/aframe/blob/master/examples/boilerplate/hello-world/index.html",
      "title": "Hello World"
    },
    {
      "section": "showcase",
      "slug": "anime-UI",
      "scene_url": "https://aframe.io/aframe/examples/showcase/anime-UI/",
      "source_url": "https://github.com/aframevr/aframe/blob/master/examples/showcase/anime-UI/index.html",
      "title": "Anime UI"
    },
    {
      "section": "showcase",
      "slug": "composite",
      "scene_url": "https://aframe.io/aframe/examples/showcase/composite/",
      "source_url": "https://github.com/aframevr/aframe/blob/master/examples/showcase/composite/index.html",
      "title": "Composite"
    },
    {
      "section": "showcase",
      "slug": "videosphere",
      "scene_url": "https://aframe.io/aframe/examples/boilerplate/360-video/",
      "source_url": "https://github.com/aframevr/aframe/blob/master/examples/boilerplate/360-video/index.html",
      "title": "360 Video",
      "supports": {
        "android": false,
        "ios": false
      }
    },
    {
      "section": "showcase",
      "slug": "curved-mockups",
      "scene_url": "https://aframe.io/aframe/examples/showcase/curved-mockups/",
      "source_url": "https://github.com/aframevr/aframe/blob/master/examples/showcase/curved-mockups/index.html",
      "title": "Curved Mockups"
    },
    {
      "section": "showcase",
      "slug": "spheres-and-fog",
      "scene_url": "https://aframe.io/aframe/examples/showcase/spheres-and-fog/",
      "source_url": "https://github.com/aframevr/aframe/blob/master/examples/showcase/spheres-and-fog/index.html",
      "title": "Spheres & Fog"
    },
    {
      "section": "showcase",
      "slug": "shopping",
      "scene_url": "https://aframe.io/aframe/examples/showcase/shopping/",
      "source_url": "https://github.com/aframevr/aframe/blob/master/examples/showcase/shopping/index.html",
      "title": "Shopping"
    },
    {
      "section": "showcase",
      "slug": "warps",
      "scene_url": "https://aframe.io/aframe/examples/animation/warps/",
      "source_url": "https://github.com/aframevr/aframe/blob/master/examples/animation/warps/index.html",
      "title": "Warp"
    },
    {
      "section": "showcase",
      "slug": "generic-logo",
      "scene_url": "https://aframe.io/aframe/examples/animation/generic-logo/",
      "source_url": "https://github.com/aframevr/aframe/blob/master/examples/animation/generic-logo/index.html",
      "title": "Logo"
    },
    {
      "section": "showcase",
      "slug": "unfold",
      "scene_url": "https://aframe.io/aframe/examples/animation/unfold/",
      "source_url": "https://github.com/aframevr/aframe/blob/master/examples/animation/unfold/index.html",
      "title": "Unfold"
    },
    {
      "section": "showcase",
      "slug": "sky",
      "scene_url": "https://aframe.io/aframe/examples/boilerplate/panorama/",
      "source_url": "https://github.com/aframevr/aframe/blob/master/examples/boilerplate/panorama/index.html",
      "title": "Panorama"
    }
  ]
}

[cvan]

To close this (assuming there have since been no changes to this file), simply revert d49c5ef.

[ngokevin]

We should version the source code links to the tag too.

[cvan]

We should version the source code links to the tag too.

that's a good call 👍