use diff characters to fix frontmatter issue

rules/do-you-know-the-best-practices-for-frontmatter-in-markdown/rule.md

@@ -1,4 +1,4 @@
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 type: rule
 title: Do you know the best practices for Frontmatter in markdown?
 uri: do-you-know-the-best-practices-for-frontmatter-in-markdown
@@ -9,7 +9,7 @@ authors:
     url: https://www.ssw.com.au/people/ozair-ashfaque/
 created: 2023-10-30T23:25:28.835Z
 guid: 7c0bb2bb-06b7-45a7-a3a5-5b1b27f7fef2
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 Frontmatter is a critical component in markdown files, especially when generating static sites or handling content management. It allows authors and developers to embed metadata directly at the beginning of a markdown document. This metadata can include information about the document's title, author, date, and other attributes. A well-structured Frontmatter ensures that the markdown processor can quickly extract the necessary metadata and use it for various purposes, like generating page titles or categorizing posts. 
 
@@ -29,10 +29,10 @@ However, avoid non-standard practices like mixing data types or adding unnecessa
 
 ::: greybox
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 title+author: My Article by John
 2023-10-31
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@@ -42,11 +42,11 @@ Figure: Bad Example {Non-standard practices can lead to parsing errors and incon
 
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 title: My Article
 author: John Doe
 date: 2023-10-31
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@@ -71,9 +71,9 @@ However, avoid the common mistake of listing values in a continuous string. This
 
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 authors: John Doe, Jane Smith, Bob Johnson
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 :::
 
@@ -85,12 +85,12 @@ Here's how you can effectively use arrays:
 
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 authors: 
   - John Doe
   - Jane Smith
   - Bob Johnson
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 ```
 :::