[css-overscroll-behavior] Now with fewer typos :)

Follow up to #2179

Author: frivoal

css-overscroll-behavior/Overview.bs

@@ -1,11 +1,11 @@
 <pre class='metadata'>
 Title: CSS Overscroll Behavior Module Level 1
-Shortname: overscroll-behavior
+Shortname: css-overscroll-behavior
 Level: 1
 Status: ED
 Work Status: Exploring
 Group: CSSWG
-URL: https://drafts.csswg.org/overscroll-behavior/
+URL: https://drafts.csswg.org/css-overscroll-behavior/
 Editor: Benoit Girard, Facebook, [email protected]
 Abstract: This module defines 'overscroll-behavior' to control the behavior when the scroll position of a <a>scroll container</a> reaches the edge of the <a>scrollport</a>.
 Abstract: This allows content authors to hint that the <a>boundary default actions</a>,