fix(docs): some modifications on warnings

Author: TOUFIKIzakarya

docs/integration/categories/applicative/microsoft_iis.md

@@ -16,17 +16,17 @@ Microsoft Internet Information Services (IIS) is a web server software for Windo
 
 This setup guide will show you how to forward your Microsoft IIS logs to Sekoia.io by means of a syslog transport channel.
 
+!!! Warning
+    To avoid time offset issues when events are parsed by Sekoia.io (e.g. events appearing to happen in the future), you *must* configure your server's timezone to **UTC**. 
+    You can find more information in the [Sekoia timezone requirements document](https://docs.sekoia.io/xdr/FAQ/datetime/).
+
 ### Create your intake
 
 1. Go to the [intake page](https://app.sekoia.io/operations/intakes) and create a new intake from the `Microsoft IIS`.
 2. Copy the associated Intake key
 
 ### Activate log in Microsoft IIS
 
-!!! warning "Important prerequisite regarding timezones"
-    To avoid time offset issues when events are parsed by Sekoia.io (e.g. events appearing to happen in the future), you *must* configure your server's timezone to **UTC**. 
-    You can find more information in the [Sekoia timezone requirements document](https://docs.sekoia.io/xdr/FAQ/datetime/).
-    
 Launch the `Internet Information Services (IIS) Manager`
 
 In the `Connections` panel, select the server then the desired site and go to the `Logging` section.

docs/integration/categories/network/f5-big-ip.md

@@ -46,7 +46,7 @@ F5's BIG-IP is a family of products covering software and hardware designed arou
 
 ## Step-by-Step Configuration Procedure
 
-!!! warning "Important prerequisite regarding timezones"
+!!! Warning
     To avoid time offset issues when events are parsed by Sekoia.io (e.g. events appearing to happen in the future), you *must* configure your system's timezone to **UTC**.
     You can find more information in the [Sekoia timezone requirements document](https://docs.sekoia.io/xdr/FAQ/datetime/).