Update README.md

Author: rebelinux

README.md

@@ -52,7 +52,7 @@ The Veeam VBR As Built Report supports the following Veeam Backup & Replication
 
 - Veeam Backup & Replication v12+ (Standard, Enterprise & Enterprise Plus Edition)
 
-## ⛔ Unsupported Versions
+## :no_entry_sign: Unsupported Versions
 
 The versions 10 and 11 are no longer supported by Veeam. So I will not be performing compatibility tests with those versions. The report may work on previous versions but I do not guarantee and will not address issues related to pre-v12.