Update readme

Author: raujonas

README.md

@@ -11,7 +11,7 @@ Executes arbitrary shell commands periodically and displays the result in gnome
 
 ## Install
 
-[<img src="https://raw.githubusercontent.com/andyholmes/gnome-shell-extensions-badge/master/get-it-on-ego.svg?sanitize=true" alt="Get it on GNOME Extensions" height="100" align="middle">](https://extensions.gnome.org/extension/2932/executor/)
+[<img src="https://raw.githubusercontent.com/andyholmes/gnome-shell-extensions-badge/master/get-it-on-ego.svg?sanitize=true" alt="Get it on GNOME Extensions" height="100" width="220">](https://extensions.gnome.org/extension/2932/executor/)
 
 OR download the <a href="https://github.com/raujonas/executor/releases/latest">zip of the latest release</a> and extract the content to ~/.local/share/gnome-shell/extensions/[email protected]