[css-overscroll-behavior-1] Fix a minor linking issue

Author: majido

css-overscroll-behavior-1/Overview.bs

@@ -188,7 +188,7 @@ Values have the following meanings:
 <dl dfn-for="overscroll-behavior, overscroll-behavior-x, overscroll-behavior-y, overscroll-behavior-inline, overscroll-behavior-block" dfn-type="value">
   <dt><dfn>contain</dfn>
   <dd>
-    This value indicates that the element must not perform non-<a>local boundary default actions</a>
+    This value indicates that the element must not perform <a>non-local boundary default actions</a>
     such as scroll chaining or navigation. The user agent must not perform scroll chaining to any
     ancestors along the <a>scroll chain</a> regardless of whether the scroll originated at this
     element or one of its descendants. This value must not modify the behavior of how <a>local