Fix javadoc for CameraManager.AvailabilityCallback

The javadoc for CameraManager.AvailabilityCallback was missing an "#".
This causes the link to registerAvailabilityCallback not being generated
correctly.

Once the "#" was added the link shows up correctly.

Change-Id: I3da3aa737a6af487f117eccbeee5c682c003b7e2
1 file changed