[css-align-3] Multi-col 'normal' gaps are always 1em per total interop. w3c#2145

Author: fantasai

css-align-3/Overview.bs

@@ -1843,10 +1843,9 @@ Row and Column Gutters: the 'row-gap' and 'column-gap' properties</h3>
 			of a <a>block-level</a> <a>grid container</a>).
 
 		: <dfn>normal</dfn>
-		:: The ''gap/normal'' represents a UA-dependent length on <a>multi-column elements</a>,
+		:: The ''gap/normal'' represents
+			a used value of ''1em'' on <a>multi-column elements</a>,
 			and a used value of ''0px'' in all other contexts.
-
-			Issue(2145): Should ''gap/normal'' just be ''1em'' in multicol?
 	</dl>
 
 	Gutters effect a minimum spacing between items: