Update main.go

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

Author: jimmykarily

main.go

@@ -1314,8 +1314,8 @@ Default behavior:
 				Usage: "Clean up TPM NV memory",
 				Description: `Clean up TPM NV memory by undefining specific NV indices.
 
-??  DANGER: This command removes data from TPM memory!
-??  If you delete the wrong index, your encrypted disk may become UNBOOTABLE!
+⚠️  DANGER: This command removes data from TPM memory!
+⚠️  If you delete the wrong index, your encrypted disk may become UNBOOTABLE!
 
 This command helps clean up TPM NV memory. It can be used to clean up
 legacy local passphrase storage (now handled by kairos-sdk) or any other