Update the layout on the installation guide pages

Author: AlexanderShelyugov

src/content/docs/en/alta/getting-started/install.md

@@ -13,9 +13,9 @@ Download single binary file to your server and start service in few simple steps
 - x86 64bit CPU
 - Connection to the internet on your server
 
-::note
+:::note
 In this guide we use the **curl** command to download files. Most Linux distribution has pre-installed **curl**
-::
+:::
 
 ## Install Alta
 

src/content/docs/en/astra/getting-started/install.md

@@ -14,9 +14,9 @@ Astra installation is a simple process – just copy single binary file to your
 - Connection to the internet on your server
 - Periodic internet access is required for license validation by Astra on the servers: `ls1.cesbo.com`, `ls2.cesbo.com`, and `ls3.cesbo.com`
 
-::note
+:::note
 In this guide we use the **curl** command to download files. Most Linux distribution has pre-installed **curl**
-::
+:::
 
 ## Install Astra