Improve name of installation file for mobile version

### Please answer the following questions for yourself before submitting an issue.

- [X] I am running the latest version
- [X] I checked the documentation and found no answer
- [X] I checked to make sure that this issue has not already been filed

### AdGuard VPN version

v2.5 (5)

### Operating mode

VPN

### Environment

```markdown
- OS: Android 14
- Device: Google Pixel 3A
- Firmware: N/A
```

### Root access

- [ ] Yes, I have it.

### Issue Details

Steps to reproduce:
1. Download APK file from https://adguard-vpn.com/en/android/overview.html

### Expected Behavior

The name of the APK file will be spelled correctly as in the installer for macOS: `AdGuardVPN`

### Screenshots

Screenshot 1:


### Additional Information

_No response_