The ornamental design for a tablet, as shown and described.
The file of this patent contains at least one photograph executed in color. Copies of this patent with color photographs will be provided by the Office upon request and payment of the necessary fee.
FIG. 1 is a top plan image of a tablet;
FIG. 2 is a bottom plan image of the tablet of FIG. 1; and,
FIG. 3 is a side elevation image of the tablet of FIG. 1.