Update browser_extensions.md

docs/browser_extensions.md

@@ -5,6 +5,7 @@ The Following extensions are all available in brave, chrome & edge (Chromium-bas
 
 ## productivity Extensions
 - `uBlock Origin`: An efficient, wide-spectrum content blocker that's easy on memory.
+- `QR Code Generator` : Create QR code for webgaes and more
 - `Checker Plus for Gmail`: Get desktop notifications, read, listen to or delete emails without opening Gmail (pin the extension and activate the option to receive notifications even when the browser is closed  -> in the extension's settings)
 - `Checker Plus for Calendar`: Get desktop notifications (activate the option to receive notifications even when the browser is closed  -> in the extension's settings. Also change the notification type from pop-up to rich)
 - `Free Download Manager`: A powerful, easy-to-use and absolutely free download accelerator and manager.