The ornamental design a dosingcap, as shown and described.
FIG. 1 is a front perspective view of a dosing cap of our new design shown in an environment of use with a mounting nut and closure drawn in broken lines.
FIG. 2 is a front perspective view of a dosing cap of our new design with the environmental mounting nut and closure removed;
FIG. 3 is a front view thereof;
FIG. 4 is a back view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a left side view thereof; and,
FIG. 8 is a right side view thereof.
The broken lines in FIG. 1 illustrating a mounting nut and closure depict environmental subject matter and form no part of the claimed design. All other broken lines depict portions of the dosing cap that form no part of the claimed design.