Broken link in exporting_for_web.rst

[Jackerty]

Your Godot version:
Git -> master.

Issue description:
Broken link in tutorials/export/exporting_for_web.rst

URL to the documentation page:
tutorials/export/exporting_for_web.rst

(supports manual gzip precompression) link is broken.

[Jackerty]

Also, this auto-play policy is returning 404.

[Jackerty]

https://webd97.de/ is just down so that explains the first one.

[Jackerty]

Auto-play one should be to https://www.chromium.org/audio-video/autoplay/ ?

[tetrapod00]

Thanks for making an issue and finding a suitable replacement link