[css-text-3] Better metadata for anchoring term

Author: frivoal

css-text-3/Overview.bs

@@ -826,7 +826,7 @@ Characters and Letters</h3>
     When a line is broken due to content <dfn lt="wrapping|wrap">wrapping</dfn>
     (i.e. when the UA creates unforced line breaks in order to fit the content within the measure),
     it is a <dfn>soft wrap break</dfn>.
-    The process of breaking inline-level content into lines is called <dfn export lt="line-breaking-process">line breaking</dfn>.
+    The process of breaking inline-level content into lines is called <dfn export lt="line breaking process | line breaking">line breaking</dfn>.
 
   <p>Wrapping is only performed at an allowed break point,
     called a <dfn export>soft wrap opportunity</dfn>.