Add data: URI to changelog

CHANGELOG.md

@@ -12,10 +12,11 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### Changed
 
-* Replace GET by POST for QR codes generation (privacy enhancement)
+* Replace GET by POST for QR codes generation request (privacy enhancement)
+* Output generated QR code with `data:` URI
 * Change the QR code generation library
 * Use less.php instead of lesserphp
-* Use the prefers-color-scheme CSS feature to let the client choose their prefered theme (dark/light)
+* Use the prefers-color-scheme CSS feature to let the client choose its prefered theme (dark/light)
 
 ### Removed