Update offset class name in comment in _grid-framework.scss

[skip sauce]
[skip validator]

scss/mixins/_grid-framework.scss

@@ -36,7 +36,7 @@
 
       // `$columns - 1` because offsetting by the width of an entire row isn't possible
       @for $i from 0 through ($columns - 1) {
-        @if $breakpoint-counter != 1 or $i != 0 { // Avoid emitting useless .col-xs-offset-0
+        @if $breakpoint-counter != 1 or $i != 0 { // Avoid emitting useless .offset-xs-0
           .offset-#{$breakpoint}-#{$i} {
             @include make-col-modifier(offset, $i, $columns)
           }