tree-wide: enforce single quotes through prettier

Signed-off-by: Christoph Heiss <christoph@c8h4.io>

.build.yml

@@ -1,7 +1,7 @@
 ---
 image: nixos/unstable
 environment:
-  NIX_CONFIG: "experimental-features = nix-command flakes"
+  NIX_CONFIG: 'experimental-features = nix-command flakes'
 sources:
   - https://git.sr.ht/~c8h4/c8h4.io
 secrets:

.prettierrc.json

@@ -0,0 +1,3 @@
+{
+  "singleQuote": true
+}

themes/hacker/assets/scss/main.scss

@@ -13,17 +13,17 @@ html {
     system-ui,
     -apple-system,
     BlinkMacSystemFont,
-    "Segoe UI",
-    "Roboto",
-    "Oxygen",
-    "Ubuntu",
-    "Cantarell",
-    "Fira Sans",
-    "Droid Sans",
-    "Helvetica Neue",
-    "Segoe UI Emoji",
-    "Apple Color Emoji",
-    "Noto Color Emoji",
+    'Segoe UI',
+    'Roboto',
+    'Oxygen',
+    'Ubuntu',
+    'Cantarell',
+    'Fira Sans',
+    'Droid Sans',
+    'Helvetica Neue',
+    'Segoe UI Emoji',
+    'Apple Color Emoji',
+    'Noto Color Emoji',
     sans-serif;
   font-size: 12pt;
   max-width: 45em;
@@ -69,7 +69,7 @@ p {
 
 main {
   ul {
-    list-style-type: "*";
+    list-style-type: '*';
   }
 
   li {
@@ -79,7 +79,7 @@ main {
 
 header {
   ul {
-    list-style-type: "";
+    list-style-type: '';
     margin: 0 0 0.1em 0;
   }