[css-scroll-snap] Computed value should just be 'as specified', I think.

Author: tabatkins

css-scroll-snap/Overview.bs

@@ -443,8 +443,7 @@ Scroll Snapping Alignment: the 'scroll-snap-align' property {#scroll-snap-align}
 	Applies to: all elements
 	Inherited: no
 	Percentages: refer to size of scroll container's <a>snap viewport</a> <em>minus</em> size of box's <a>snap area</a>
-	Computed value: an optional ''point'' keyword, plus one or two alignment values
-	                each consisting of either a ''none'' or ''edges'' keyword or a percentage
+	Computed value: as specified
 	Animatable: no
 	Media: interactive
 	</pre>
@@ -460,7 +459,7 @@ Scroll Snapping Alignment: the 'scroll-snap-align' property {#scroll-snap-align}
 		<dfn for=scroll-snap-align><<snap-alignment>></dfn> = center | [ start | end ] <<percentage>>?
 	</pre>
 
-	Issue: This is a subset of the L4 <<position> syntax
+	Issue: This is a subset of the L4 <<position>> syntax
 	that works within the constraint of an axis.
 	It also aligns with the <<self-position>> syntax from [[CSS-ALIGN-3]] (see e.g. 'align-self').
 	We could simplify to ''center | start | end'' by dropping <<percentage>>