Follow desktop copy for DNS warnings

Author: buggmagnet

ios/MullvadVPN/View controllers/VPNSettings/CustomDNSCellFactory.swift

@@ -154,7 +154,7 @@ final class CustomDNSCellFactory: CellFactoryProtocol {
             cell.titleLabel.text = NSLocalizedString(
                 "CUSTOM_DNS_CELL_LABEL",
                 tableName: "VPNSettings",
-                value: "Use custom DNS",
+                value: "Use custom DNS server",
                 comment: ""
             )
             cell.setEnabled(viewModel.customDNSPrecondition == .satisfied)

ios/MullvadVPN/View controllers/VPNSettings/CustomDNSViewController.swift

@@ -112,8 +112,9 @@ extension CustomDNSViewController: DNSSettingsDataSourceDelegate {
                 value: """
                 When this feature is enabled it stops the device from contacting certain \
                 domains or websites known for distributing ads, malware, trackers and more. \
+
                 This might cause issues on certain websites, services, and apps.
-                Attention: this setting cannot be used in combination with **Use custom DNS**.
+                Attention: this setting cannot be used in combination with **Use custom DNS server**.
                 """,
                 comment: ""
             ), options: MarkdownStylingOptions(font: .preferredFont(forTextStyle: .body)))