Add a note about persistent notification behavior starting in Android 14

[dshokouhi]

We have a upcoming behavior change to one of our parameters so need to inform the user about this.

Ref: https://github.com/home-assistant/android/issues/3655

Actual docs: https://developer.android.com/about/versions/14/behavior-changes-all#non-dismissable-notifications

[jpelgrom]

Should the box be placed after the first paragraph perhaps, to allow users to understand what a persistent notification is first before detailing version-specific behavior? For example see the device compatiblity box after 'Notification Message HTML Formatting'.

the user / user

Use 'you' like the main text.

will be dismissable

Right now Android 14 is the future, but not once it is released; use 'can be dismissed'.

the phone

More generic: the device.

[dshokouhi]

thanks for the suggestion, applied the recommendations :)

[jpelgrom]

You left a new blank line (367) ;)