The ornamental design for a fabric, as shown and described.
FIG. 1 is a perspective view of a fabric showing my new design.
FIG. 2 is side view thereof;
FIG. 3 is an opposing side view thereof;
FIG. 4 is an end view thereof;
FIG. 5 is an enlarged view thereof taken along lines 5-5 of FIG. 2; and,
FIG. 6 is an enlarged view thereof taken along lines 6-6 of FIG. 3.
The broken lines at the end portions of the fabric in FIGS. 1-4 depict the boundaries of the claim and form no part thereof. The broken lines indicating the boundaries of the detail areas form no part of the claimed design.