Nicer code callouts

• Make (or rather fake) code callout references in PDFs look consistent, even when they occur in prose rather than in the callout list
• Use callout icons in HTML
  • only works for code and actual callout list
  • (fake) callout references in prose look like ② instead
• Fix wrong numbering in source
  • (Didn't affect result, but caused warning asciidoctor: WARNING: PewPew_Cheatsheet.adoc: line 54: callout list item index: expected 8, got 7)

.gitlab-ci.yml

@@ -13,7 +13,7 @@ pages: &pages_job
       - main
   script:
     - asciidoctor-pdf --destination-dir=public/ *.adoc
-    - asciidoctor --destination-dir=public/ *.adoc
+    - asciidoctor -a icons=font --destination-dir=public/ *.adoc
     - mv img/ public/img/
     - mv *.docx public/
   artifacts: