Install Liberation fonts in CI

Author: tingerrr

.github/workflows/tests.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Probe runner package cache
         uses: awalsh128/cache-apt-pkgs-action@latest
         with:
-          packages: imagemagick cargo fonts-noto-cjk
+          packages: imagemagick cargo fonts-liberation
           version: 1.0
 
       - name: Install oxipng from crates.io

docs/util.typ

@@ -5,6 +5,3 @@
 #let issue(num) = text(eastern, link(package.repository + "/issues/" + str(num))[hydra\##num])
 
 #let issues = text(eastern, link(package.repository + "/issues/")[GitHub:typst-community/mantodea])
-
-#let raw-bg = gray.lighten(50%)
-#let bbox = box.with(inset: (x: 0.25em), outset: (y: 0.25em), radius: 0.25em)

src/theme.typ

@@ -2,11 +2,11 @@
   fonts: (
     serif: ("Linux Libertine", "Liberation Serif"),
     sans:  ("Liberation Sans", "Helvetica Neue", "Helvetica"),
-    mono:  ("Liberation Mono", ),
+    mono:  ("Liberation Mono",),
 
     text:     ("Linux Libertine", "Liberation Serif"),
     headings: ("Liberation Sans", "Helvetica Neue", "Helvetica"),
-    code:     ("Liberation Mono", ),
+    code:     ("Liberation Mono",),
   ),
   colors: (
     primary:   eastern,