[css-text-decor-3] Also update animations link

Author: fantasai

css-text-decor-3/Overview.bs

@@ -247,7 +247,7 @@ Text Decoration Lines: the 'text-decoration-line' property</h3>
         The text blinks (alternates between visible and invisible).
         Conforming user agents may simply not blink the text.
         Note that not blinking the text is one technique to satisfy <a href="https://www.w3.org/TR/UAAG/guidelines.html#tech-on-off-blinking-text">checkpoint 3.3 of WAI-UAAG</a>.
-        This value is <strong>deprecated</strong> in favor of Animations [[CSS3-ANIMATIONS]].
+        This value is <strong>deprecated</strong> in favor of Animations [[CSS-ANIMATIONS-1]].
   </dl>
 
     Note: In <a>vertical writing modes</a>,