Update README.md

Author: FaridZelli

README.md

@@ -8,3 +8,4 @@
 - A simple button that toggles between Firefox's default Light and Dark themes.
 - This project uses [Feather Icons](https://github.com/feathericons/feather).
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+<img src="https://raw.githubusercontent.com/FaridZelli/Toggley/refs/heads/main/Screenshots/Toggley%20Showcase%20Compact%20Highlight.png" alt="" width="65%" align="center">