Update char_limit for new string

    <string name="tether_settings_title_bluetooth">Bluetooth tethering</string>

    <!-- Tethering controls, item title to go into the tethering settings when USB and Bluetooth tethering are available [CHAR LIMIT=25]-->

    <string name="tether_settings_title_usb_bluetooth">Tethering</string>

    <!-- Tethering controls, item title to go into the tethering settings when USB, Bluetooth and Wifi tethering are available [CHAR LIMIT=25]-->

    <!-- Tethering controls, item title to go into the tethering settings when USB, Bluetooth and Wifi tethering are available [CHAR LIMIT=50]-->

    <string name="tether_settings_title_all">Hotspot &amp; Tethering</string>

    <!-- Tethering setting summary when both Wi-Fi hotspot and tether are turned on [CHAR LIMIT=NONE]-->

    <string name="tether_settings_summary_hotspot_on_tether_on">Hotspot on, tethering</string>

    handle actions such as open web page, making phone calls, default SMS apps [CHAR  LIMIT=40]-->

    <string name="app_default_dashboard_title">Default apps</string>

    <!-- Summary text for system preference tile, showing important setting items under system setting [CHAR LIMIT=NONE]-->

    <string name="system_dashboard_summary">Languages, backup, updates, about phone</string>

    <string name="system_dashboard_summary" product="default">Languages, backup, updates, about phone</string>

    <!-- Summary text for system preference tile, showing important setting items under system setting [CHAR LIMIT=NONE]-->

    <string name="system_dashboard_summary" product="tablet">Languages, backup, updates, about device</string>

    <!-- Search strings -->

    <!-- Text to describe the search results fragment title [CHAR LIMIT=16] -->