fix magick deprecation

Author: liborm85

docs/generate_website.js

@@ -109,7 +109,7 @@ const generateImages = function(tree) {
       // write the PDF, convert to PNG and trim with ImageMagick (https://imagemagick.org)
       file.on('finish', () => {
         exec(
-          `magick convert -density 150x150 -trim ${f}.pdf ${f}.png`,
+          `magick -density 150x150 ${f}.pdf -trim ${f}.png`,
           (err, stdout, stderr) => {
             if (stderr) {
               console.error(stderr);