[css-scroll-snap] Fix block/inline ordering; for 2-value syntaxes it's inline first, same as x/y in English.

Author: tabatkins

css-scroll-snap/Overview.bs

@@ -507,16 +507,16 @@ Scroll Snapping Alignment: the 'scroll-snap-align' property {#scroll-snap-align}
 		<dd>
 			The element declares two <a>1D snap positions</a>,
 			one in each axis.
-			The first value is in the <a>block</a> axis,
-			and the second is in the <a>inline</a> axis.
+			The first value is in the <a>inline</a> axis,
+			and the second is in the <a>block</a> axis.
 
 		<dt id=scroll-snap-align-2d>point <<snap-alignment>>{1,2}
 		<dd>
 			The element declares a <a>2D snap position</a>.
 
 			If both alignments are given,
-			the first refers to the <a>block</a> axis
-			and the second refers to the <a>inline</a> axis.
+			the first refers to the <a>inline</a> axis
+			and the second refers to the <a>block</a> axis.
 			If only one is given,
 			the position refers to both axises.
 	</dl>