message: chore: update links in README
diff: - [ ] built-in API Console
  ## Releases
  -**Important:** all the 2.x releases are deployed to npm and can be used via unpkg:
  -- particular release, e.g. `v2.0.0-alpha.15`: https://unpkg.com/redoc@2.0.0-alpha.15/bundles/redoc.standalone.js
  -- `next` release: https://unpkg.com/redoc@next/bundles/redoc.standalone.js
  +**Important:** all the 2.x releases are deployed to npm and can be used via jsdeliver:
  +- particular release, e.g. `v2.0.0-alpha.15`: https://cdn.jsdelivr.net/npm/redoc@2.0.0-alpha.17/bundles/redoc.standalone.js
  +- `next` release: https://cdn.jsdelivr.net/npm/redoc@next/bundles/redoc.standalone.js
  Additionally, all the 1.x releases are hosted on our GitHub Pages-based **CDN**:
  - particular release, e.g. `v1.2.0`: https://rebilly.github.io/ReDoc/releases/v1.2.0/redoc.min.js
  @@ -97,7 +97,7 @@ Additionally, all the 1.x releases are hosted on our GitHub Pages-based **CDN**:
  </head>
  <body>
  <redoc spec-url='http://petstore.swagger.io/v2/swagger.json'></redoc>
  - <script src="https://cdn.jsdelivr.net/npm/redoc/bundles/redoc.standalone.js"> </script>
  + <script src="https://cdn.jsdelivr.net/npm/redoc@next/bundles/redoc.standalone.js"> </script>
  </body>
  </html>
  ```
  