docs(fix): fix import mistake (#5331)

Author: nerda-codes

pages/guidelines.mdx

@@ -488,6 +488,7 @@ The introduction should be a few sentences, or a few short paragraphs, which exp
 
 ### Requirements
 
+```
 ---
 import Requirements from '@macros/iam/requirements.mdx'
 
@@ -499,6 +500,7 @@ import Requirements from '@macros/iam/requirements.mdx'
 - Configured [kubectl](/kubernetes/how-to/connect-cluster-kubectl/) on your machine
 - Installed `helm` (version 3.2+), the Kubernetes [packet manager](https://helm.sh/), on your local machine
 ---
+```
 
 Import the `<Requirements />` macro under the page's [metadata](#metadata) as shown in the example above, then use the macro or type the macro text manually. For example: