Updated CDN link

CONTRIBUTING.md

@@ -20,6 +20,7 @@
       - The third number represents a patch release, which represents bug-fixes and may be used when no action should be required from users.
    1. The commit should update `package.json`, the `Spaces.ts` class containing a `version` property and `package-lock.json`.
       Running `npm install` after changing `package.json` will update `package-lock.json`.
+   1. Update the README.md for any references to the new version, such as the CDN link.
 1. Merge the commit into main.
 1. Tag a release using [Github releases](https://docs.github.com/en/repositories/releasing-projects-on-github/managing-releases-in-a-repository#creating-a-release). The version needs to match the one from the commit. Use the "Generate release notes" button to
    add changelog notes and update as required.

README.md

@@ -87,7 +87,7 @@ You can also use Spaces with a CDN, such as [unpkg](https://www.unpkg.com/):
 
 ```html
 <script src="https://cdn.ably.com/lib/ably.min-1.js"></script>
-<script src="https://unpkg.com/@ably-labs/spaces@0.0.10/dist/iife/index.bundle.js"></script>
+<script src="https://cdn.ably.com/spaces/0.0.13/iife/index.bundle.js"></script>
 ```
 After this, instantiate the SDK in the same way as in the NPM option above.