Update readme.md

Added screenshot to show how it looks

Author: JohanDC-1999

Specialized Areas/Browser Bookmarklets/Show Logged-in User roles/readme.md

@@ -16,3 +16,6 @@ A simple, client-side bookmarklet to display the current ServiceNow user's detai
 4.  Paste the code into the **URL** or **Address** field of the bookmark
 5.  Save the bookmark
 6.  While on any ServiceNow page, click the bookmark to activate the modal
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+<img width="1899" height="761" alt="image" src="https://github.com/user-attachments/assets/6dd8e92a-f905-4516-b1be-61e32a4de35c" />
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