docs: update starter template (#5570)

Use a codepen template for the starter template that includes the latest version of Video.js.

The template is at https://codepen.io/gkatsev/pen/GwZegv?editors=1000#0

Fixes #5562

Author: gkatsev

.github/ISSUE_TEMPLATE.md

@@ -1,6 +1,6 @@
 ## Description
 Briefly describe the issue.
-Include a [reduced test case](https://css-tricks.com/reduced-test-cases/), we have a [starter template](http://jsbin.com/axedog/edit?html,output) on JSBin you can use.
+Include a [reduced test case](https://css-tricks.com/reduced-test-cases/), we have a [starter template](https://codepen.io/gkatsev/pen/GwZegv?editors=1000#0) on JSBin you can use.
 
 ## Steps to reproduce
 Explain in detail the exact steps necessary to reproduce the issue.

.github/PULL_REQUEST_TEMPLATE.md

@@ -12,5 +12,5 @@ Please list the specific changes involved in this pull request.
   - [ ] Change has been verified in an actual browser (Chome, Firefox, IE)
   - [ ] Unit Tests updated or fixed
   - [ ] Docs/guides updated
-  - [ ] Example created ([starter template on JSBin](http://jsbin.com/axedog/edit?html,output))
+  - [ ] Example created ([starter template on JSBin](https://codepen.io/gkatsev/pen/GwZegv?editors=1000#0))
 - [ ] Reviewed by Two Core Contributors

CONTRIBUTING.md

@@ -59,7 +59,7 @@ Guidelines for bug reports:
 1. If your issue is with a particular video.js plugin or subproject, please open an issue against that project. See [list of some potential other projects above](#other-repositories-where-issues-could-be-filed)
 1. Use the [GitHub issue search](https://github.com/videojs/video.js/issues) — check if the issue has already been reported.
 1. Check if the issue has already been fixed — try to reproduce it using the latest `master` branch in the repository.
-1. Isolate the problem — **create a [reduced test case](https://css-tricks.com/reduced-test-cases/)** with a live example. You can possibly use [this JSBin example](http://jsbin.com/axedog/edit) as a starting point -- don't forget to update it to the videojs version you use.
+1. Isolate the problem — **create a [reduced test case](https://css-tricks.com/reduced-test-cases/)** with a live example. You can possibly use [this codepen tempalte](https://codepen.io/gkatsev/pen/GwZegv?editors=1000#0) as a starting point -- don't forget to update it to the videojs version you use.
 1. Answer all questions in the [issue template][]. The questions in the issue template are designed to try and provide the maintainers with as much information possible to minimize back-and-forth to get the issue resolved.
 
 A good bug report should be as detailed as possible, so that others won't have to follow up for the essential details.

docs/guides/faq.md

@@ -336,7 +336,7 @@ Yes! See [ReactJS integration example][react-guide].
 
 [slack]: https://videojs.slack.com
 
-[starter-example]: https://jsbin.com/axedog/edit?html,output
+[starter-example]: https://codepen.io/gkatsev/pen/GwZegv?editors=1000#0
 
 [techorder]: /docs/guides/options.md#techorder