style: format code with Prettier

This commit fixes the style issues introduced in 8c02e38 according to the output
from Prettier.

Details: None

src/content/posts/code-examples.md

@@ -107,4 +107,4 @@ class Article(models.Model):
 
     def __str__(self):
         return self.title
-```
+```

src/styles/_reset.scss

@@ -27,12 +27,13 @@ body {
     color: $light;
 }
 
-ul[role='list'],
-ol[role='list'] {
+ul[role="list"],
+ol[role="list"] {
     list-style: none;
 }
 
-img, picture {
+img,
+picture {
     max-width: 100%;
     display: block;
 }