prez: Produce MD & PNGs (useful e.g. for cover)

Author: vorburger

docs/prez/sli.dev/build

@@ -6,4 +6,7 @@ npm install
 npm run build
 ln -s ../images/ dist/images
 
-npm run export
+npm run export-md-png
+
+# Broken? See https://github.com/slidevjs/slidev/issues/1872
+npm run export-pdf

docs/prez/sli.dev/package.json

@@ -5,7 +5,8 @@
 "scripts":{
 "build": "slidev build --dark --base /LearningMachineLearning/prez/sli.dev/dist/",
 "dev": "slidev --open",
-"export": "slidev export --dark --with-toc --output dist/slides.pdf"
+"export-pdf": "slidev export --dark --with-toc --output dist/slides.pdf",
+"export-md-png": "slidev export --dark --format md --output dist/png"
  },
 "dependencies":{
 "@slidev/cli": "^0.49.29",