Merge pull request #11511 from ZDroid/fix-xs-comments

Fix comments for extra small grid

less/grid.less

@@ -28,8 +28,8 @@
 
 // Extra small grid
 //
-// Grid classes for extra small devices like smartphones. No offset, push, or
-// pull classes are present here due to the size of the target.
+// Columns, offsets, pushes, and pulls for extra small devices like
+// smartphones.
 //
 // Note that `.col-xs-12` doesn't get floated on purpose--there's no need since
 // it's full-width.