Use four spaces in frontmatter blocks

source/_daily_emails/2024-01-17.md

@@ -3,10 +3,10 @@ title: Please don't use short variable names
 date: 2024-01-17
 permalink: archive/2024/01/17/short-variable-names
 snippet: |
-  Why use variable names like $k, $v and $i instead of $key, $value and $index? What benefit does it add?
+    Why use variable names like $k, $v and $i instead of $key, $value and $index? What benefit does it add?
 tags:
-  - software-development
-  - clean-code
+    - software-development
+    - clean-code
 ---
 
 When learning to code, one of the most confusing things was using short variable names in documentation and other people's code.