[css-flexbox-1][editorial] update link defaults

Author: svgeesus

css-flexbox-1/Overview.bs

@@ -53,6 +53,11 @@ spec: css-writing-modes-3; type: dfn;
 spec: css-pseudo-4; type: selector;
 	text: ::first-line
 	text: ::first-letter
+spec:css-flexbox-1; 
+	type:property; 
+		text:order
+	type:dfn; 
+		text:order-modified document order
 </pre>
 
 <style>