[css-gaps-1][editorial] Tighten up descriptions of rule-break values

Author: kbabbitt

css-gaps-1/Overview.bs

@@ -579,15 +579,12 @@ Break behaviors at intersections: The 'column-rule-break', 'row-rule-break', and
 				</dd>
 				<dt><a>Flex containers</a>
 				<dd>
-					Because flex items do not span across flex lines,
-					there are no visible "T" intersections caused by spanning items,
-					so in practice this is identical to ''column-rule-break/none''.
+					Behaves the same as ''column-rule-break/none''.
 				</dd>
 				<dt><a>Multicol containers</a>
 				<dd>
-					In order to preserve the traditional readability of text in columns,
-					'column-rule-break' behaves as ''column-rule-break/intersection'', and
-					'row-rule-break' behaves as ''row-rule-break/none''.
+					On 'column-rule-break', behaves the same as ''column-rule-break/intersection''.
+					On 'row-rule-break', behaves the same as ''row-rule-break/none''.
 				</dd>
 			</dl>
 		</dd>