[css-sizing-3] Export 'cyclic percentage size'.

Author: fantasai

css-sizing-3/Overview.bs

@@ -1013,7 +1013,7 @@ Intrinsic Contributions of Percentage-Sized Boxes</h4>
 	(including any calculations for a content-based <a>automatic minimum size</a>),
 	a percentage value that resolves against a size
 	in the same axis as the [=intrinsic size contribution=]
-	(a <dfn>cyclic percentage</dfn>)
+	(a <dfn export local-lt="cyclic percentage">cyclic percentage size</dfn>)
 	is resolved specially:
 
 	<ol type=a>