add best practice for other special characters

Author: MarkvanMents

content/en/docs/refguide/modeling/menus/version-control-menu/branch-line-manager-dialog/create-branch-line-dialog.md

@@ -51,7 +51,10 @@ Select from which tagged version you want to create a branch line. Every time yo
 Enter a name for the new branch line.
 
 {{% alert color="warning" %}}
-While creating a branch, avoid using invalid characters such as `\`, `^`, `~`, `[`, `:`, `?`, `*`, `<space>`, or consecutive dots `..`. These characters are not permitted by Git and will automatically be replaced with a dash `-`.{{% /alert %}}
+While creating a branch, avoid using invalid characters such as `\`, `^`, `~`, `[`, `:`, `?`, `*`, `<space>`, or consecutive dots `..`. These characters are not permitted by Git and will automatically be replaced with a dash `-`.
+
+Mendix also recommends not using other special characters such as `@`, `$`, and `#` as a best practice.
+{{% /alert %}}
 
 ## Existing Branch Lines