fix link to css syntax security section

Author: svgeesus

geometry/Overview.bs

@@ -1735,8 +1735,8 @@ Security Considerations {#security}
 ====================================
 
 The {{DOMMatrix}} and {{DOMMatrixReadOnly}} interfaces have entry-points to parsing a string with
-CSS syntax. Therefore the <a href="https://drafts.csswg.org/css-syntax/#priv-sec">privacy and
-security considerations</a> of the CSS Syntax specification applies. [[CSS3-SYNTAX]]
+CSS syntax. Therefore the <a href="https://drafts.csswg.org/css-syntax/#security">
+security considerations</a> of the CSS Syntax specification apply. [[CSS3-SYNTAX]]
 
 <div class=example>
 This could potentially be used to exploit bugs in the CSS parser in a user agent.