[css-grid-1] Tweak wording on minmax(large, small) being equal to small statement. #3567

Author: fantasai

css-grid-1/Overview.bs

@@ -1474,8 +1474,9 @@ Explicit Track Sizing: the 'grid-template-rows' and 'grid-template-columns' prop
 			Defines a size range
 			greater than or equal to <var>min</var>
 			and less than or equal to <var>max</var>.
-			If <var>max</var> &lt; <var>min</var>,
-			then <var>max</var> is ignored and ''minmax(<var>min</var>,<var>max</var>)'' is treated as <var>min</var>.
+			If the <var>max</var> is less than the <var>min</var>,
+			then the <var>max</var> will be floored by the <var>min</var>
+			(essentially yielding ''minmax(<var>min</var>, <var>min</var>)'').
 			As a maximum, a <<flex>> value sets the track's <a>flex factor</a>;
 			it is invalid as a minimum.