[css-animations-2] Switch timeline names from <custom-ident> to <dashed-ident> #8746

Author: fantasai

css-animations-2/Overview.bs

@@ -629,7 +629,7 @@ Animation Type: not animatable
 </pre>
 
 <pre class=prod>
-<dfn>&lt;single-animation-timeline></dfn> = auto | none | <<custom-ident>> | <<scroll()>> | <<view()>>
+<dfn>&lt;single-animation-timeline></dfn> = auto | none | <<dashed-ident>> | <<scroll()>> | <<view()>>
 </pre>
 
 The 'animation-timeline' property is similar to properties like 'animation-name'