feat(serverles): add more cron in cheatsheet (scaleway#4496)

* feat(serverles): add more cron in cheatsheet

* Update macros/serverless/cron-schedules.mdx

---------

Co-authored-by: SamyOubouaziz <[email protected]>

Author: 2 people

macros/serverless/cron-schedules.mdx

@@ -10,11 +10,11 @@ Cron jobs are expressed using the `* * * * *` format, which corresponds to the f
 
 ```
   ┌───────────── minute
-  │ ┌───────────── hour 
-  │ │ ┌───────────── day of the month 
-  │ │ │ ┌───────────── month 
+  │ ┌───────────── hour
+  │ │ ┌───────────── day of the month
+  │ │ │ ┌───────────── month
   │ │ │ │ ┌───────────── day of the week
-  │ │ │ │ │ 
+  │ │ │ │ │
   │ │ │ │ │
   │ │ │ │ │
   * * * * *
@@ -50,6 +50,25 @@ Several operators can be added to each field to further refine your schedule.
 
 ## Cron schedule examples
 
+### Simple
+
+Some examples of simple cron schedules expressions, useful for tasks like regular backups or file analysis.
+
+| Cron expression            | Description                                                    |
+|----------------------------|----------------------------------------------------------------|
+| `* * * * *`                | Runs every minute                                              |
+| `*/5 * * * *`              | Runs every 5 minutes                                           |
+| `*/15 * * * *`             | Runs every 15 minutes                                          |
+| `0 * * * *`                | Runs every hour                                                |
+| `0 0 * * *`                | Runs every day at midnight                                     |
+| `0 9 * * *`                | Runs every day at 9:00                                         |
+| `0 0 * * 0`                | Runs every Sunday at midnight                                  |
+| `0 0 1 * *`                | Runs once a month at midnight                                  |
+
+### Advanced
+
+Advanced example for more specific use cases.
+
 | Cron expression            | Description                                                    |
 |----------------------------|----------------------------------------------------------------|
 | `0 12 * * *`               | Runs at 12:00 (noon) every day                                 |
@@ -68,4 +87,4 @@ Several operators can be added to each field to further refine your schedule.
 
 - Serverless Functions and Serverless Containers [CRON triggers](/serverless-functions/concepts#cron-trigger) use the **UTC** time zone. This parameter cannot be modified.
 
-- Serverless Jobs allow modifying the time zone of their schedules via the Job **Settings** tab. Refer to [the job scheduling documentation](/serverless-jobs/how-to/manage-job-schedule/) for more information.
+- Serverless Jobs allow modifying the time zone of their schedules via the Job **Settings** tab. Refer to [the job scheduling documentation](/serverless-jobs/how-to/manage-job-schedule/) for more information.