QS: smaller tiles: Fix typo

    <string name="tile_picker_summary">View, select or change the layout of the displayed tiles</string>

    <string name="tile_choose_title">Choose a tile</string>

    <string name="title_qs_small_icons">Show smaller tiles</string>

    <string name="summary_qs_small_icons">Use smaller tiles to increase the number of colums</string>

    <string name="summary_qs_small_icons">Use smaller tiles to increase the number of columns</string>

    <string name="title_tile_airplane">Airplane mode</string>

    <string name="title_tile_battery">Battery stats</string>