update documentation since splash screen for ios needs <meta name="apple-mobile-web-app-capable" content="yes">

[Adnan-Bacic]

Is your feature request related to a problem? Please describe.
the documentation mentions that ios doesnt support the manifest file for splash screen. but it doesnt mention you also need another html tag.
you need to also set:
<meta name="apple-mobile-web-app-capable" content="yes">

as described here for example:
https://appsco.pe/developer/splash-screens

Describe the solution you'd like
just a simple update to the documentation which mentions the need for <meta name="apple-mobile-web-app-capable" content="yes"> before ios will show your splash screen

it seems like the CLI already adds this automatically, but i think it would be nice if it was also explicitly written.

Describe alternatives you've considered
not applicable?

Additional context
Add any other context or screenshots about the feature request here.