status = annot:SetLinkAnnotBorderStyle(width, dashon, dashoff)
annot:SetLinkAnnotBorderStyle() defines the style of the annotation's border.
Returns #HPDF_OK on success. Otherwise, returns an error code and the error handler is invoked.
#HPDF_INVALID_ANNOTATION - An invalid annotation handle was set.
#HPDF_INVALID_PARAMETER - An invalid width value was set.
#HPDF_FAILED_TO_ALLOC_MEM - Memory allocation failed.