docs(en): fix markdown

Author: xchopin

docs/en/administrator/installation.md

@@ -5,11 +5,12 @@ First of all, check the requirements before going further.
 *Well the  project is in beta so.. there isn't stable version at the moment.*
 
 ## From the git repository (development version)
-> Note: This method will install the current development version, use at your own risk.
+> **⚠ Note** <br>
+This method will install the current development version, use at your own risk.
 
 ` $ git clone https://github.com/Apereo-Learning-Analytics-Initiative/OpenLRW.git `
 
-##Run the application
+## Run the application
 ##### [Example of scripts for running the application in a production context](scripts.md)