Fix doc comment on $wgResponsiveImages

Doc comment referred to older implementation's data attributes.
Updated to refer to the correct srcset attribute as settled on
by browser makers, which was switched to long ago here.

Change-Id: If2bc83dd41dd88d6480957ff4968111396c9fe98

diff --git a/includes/DefaultSettings.php b/includes/DefaultSettings.php
index ab87425..3f7604d 100644 (file)
--- a/includes/DefaultSettings.php
+++ b/includes/DefaultSettings.php
@@ -1320,9 +1320,11 @@ $wgDirectoryMode = 0777;
  * Generate and use thumbnails suitable for screens with 1.5 and 2.0 pixel densities.
  *
  * This means a 320x240 use of an image on the wiki will also generate 480x360 and 640x480
- * thumbnails, output via data-src-1-5 and data-src-2-0. Runtime JavaScript switches the
- * images in after loading the original low-resolution versions depending on the reported
- * window.devicePixelRatio.
+ * thumbnails, output via the srcset attribute.
+ *
+ * On older browsers, a JavaScript polyfill switches the appropriate images in after loading
+ * the original low-resolution versions depending on the reported window.devicePixelRatio.
+ * The polyfill can be found in the jquery.hidpi module.
  */
 $wgResponsiveImages = true;