[Wi-Fi] Change Auto-connect summary string

         when signal of the Wi-Fi network is reachable [CHAR LIMIT=50]  -->

    <string name="wifi_auto_connect_title">Auto\u2011connect</string>

    <!-- Hint for Wi-Fi Auto-connect [CHAR LIMIT=NONE]  -->

    <string name="wifi_auto_connect_summary">Allow connection to this network when in range</string>

    <string name="wifi_auto_connect_summary" product="default">Allow phone to automatically connect near this network</string>

    <!-- Hint for Wi-Fi Auto-connect [CHAR LIMIT=NONE]  -->

    <string name="wifi_auto_connect_summary" product="tablet">Allow tablet to automatically connect near this network</string>

    <!-- Label for "Use a QR code to add a device to this network" [CHAR LIMIT=50]  -->

    <string name="wifi_dpp_add_device">Add device</string>

    <!-- Hint for "Add device" [CHAR LIMIT=NONE]  -->