iOS device configuration instructions incorrect

### Prerequisites

- [X] I have checked the [Wiki](https://github.com/AdguardTeam/AdGuardHome/wiki) and [Discussions](https://github.com/AdguardTeam/AdGuardHome/discussions) and found no answer

- [X] I have searched other issues and found no duplicates

- [X] I want to request a feature or enhancement and not ask a question

### The problem

iOS device configuration instructions could be improved.

```
iOS

1. From the home screen, tap Settings.
2. Choose Wi-Fi in the left menu (it is impossible to configure DNS for mobile networks).
3. Tap on the name of the currently active network.
4. In the DNS field enter your AdGuard Home server addresses.

```

1. Settings is not always on the home screen, but can also be in the App Library.
2. There is only one menu, there is no need to mention that it is on the left.
4. Requires additional steps at this point, see below proposed solution for the exact steps.

### Proposed solution

```
iOS

1. Tap the Settings app.
2. Tap Wi-Fi (it is impossible to configure DNS for mobile networks).
3. Tap on the name of the currently active network.
4. Tap Configure DNS.
5. Tap Manual.
6. Remove all existing DNS servers.
7. Tap Add Server, and enter your AdGuard Home server addresses (f iCloud Private Relay is enabled for this Wi-Fi network, it must be turned off to manually configure DNS settings).

```

### Alternatives considered and additional information

_No response_