[css-scroll-snap] add that shorthand interactions are also governed by css-logical

Author: fantasai

css-scroll-snap/Overview.bs

@@ -916,7 +916,8 @@ Choosing Snap Positions {#choosing}
 Appendix A: Longhands {#longhands}
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-The physical and logical longhands interact as defined in [[!CSS-LOGICAL-1]].
+The physical and logical longhands (and their shorthands)
+interact as defined in [[!CSS-LOGICAL-1]].
 
 Physical Longhands for 'scroll-padding' {#padding-longhands-physical}
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