Correction to deploy nicegui

[kovalp]

This is a correction to my NiceGUI tutorial. The accepted version had a hidden deficiency in the script asgi.py. Namely, the served page is the same across different machines, browsers or browser tabs. As a matter of fact, the usual way of serving pages in NiceGUI is by using the @ui.page decorator, similarly to other web frameworks. I think it is worth to correct this unfortunate oversight on my part. The little correction will improve user experience.

[svenja11]

Thank you for the update @kovalp. The changes look good!

Please add this comment to your pull request and I will merge it:

I have read and understood the Contributor's Certificate of Origin available at the end of
https://raw.githubusercontent.com/hetzneronline/community-content/master/tutorial-template.md
and I hereby certify that I meet the contribution criteria described in it.
Signed-off-by: [submitter's name and email address here]

Remember to replace [submitter's name and email address here] with your own information.

[kovalp]

I have read and understood the Contributor's Certificate of Origin available at the end of
https://raw.githubusercontent.com/hetzneronline/community-content/master/tutorial-template.md
and I hereby certify that I meet the contribution criteria described in it.
Signed-off-by: Petr Koval Kotlov [email protected]