Fix: Make watermark distance independent of DPI value
When changing the DPI value from default (250
) to a smaller one (e.g. 150
), the texts in the watermark template went further apart from each other. This can be explained by the fact that the distance was 500
. When rasterizing with a smaller DPI value, the distance stays fixed at 500
. With the proposed change, the watermark texts have always the same distance, independent of the DPI value.