Update PEmbroider_svg_image.pde

In processing/processing4#1038, Processing modified the default display density, which changes how sketches allocate pixels and breaks many PEmbroider examples. The temporary fix is to use `pixelDensity(1)`.

Author: golanlevin

examples/PEmbroider_svg_image/PEmbroider_svg_image.pde

@@ -8,6 +8,7 @@ PShape mySvgImage;
 
 void setup() {
   size(1200, 450); 
+  pixelDensity(1); // required for Processing v.4.4.3+
   noLoop(); 
 
   E = new PEmbroiderGraphics(this, width, height);