some fix

resources/admin_theme/scss/bootstrap/mixins/_image.scss

@@ -5,12 +5,12 @@
 
 // Responsive image
 //
-// Keep images from scaling beyond the width of their parents.
+// Keep default_user_photo from scaling beyond the width of their parents.
 
 @mixin img-fluid {
   // Part 1: Set a maximum relative to the parent
   max-width: 100%;
-  // Part 2: Override the height to auto, otherwise images will be stretched
+  // Part 2: Override the height to auto, otherwise default_user_photo will be stretched
   // when setting a width and height attribute on the img element.
   height: auto;
 }