[css2023][editorial] Bikeshed complains about css21

Author: svgeesus

css-2023/Overview.bs

@@ -31,7 +31,7 @@ Boilerplate: index no
 </pre>
 <pre class=link-defaults>
 spec:selectors-4; type:selector; text::lang()
-
+spec:selectors-4; type:dfn; text:document language
 </pre>
 
 
@@ -912,7 +912,7 @@ Safe to Release pre-CR Exceptions</h2>
 <h3 id="terms">Terms Index</h3>
 
 <index type="dfn" status="TR" spec="
-	css21,
+	css2,
 	css-syntax-3,
 	css-style-attr,
 	mediaqueries-3,
@@ -956,7 +956,7 @@ Safe to Release pre-CR Exceptions</h2>
 <h3 id="selectors">Selector Index</h3>
 
 <index type="selector" status="TR" spec="
-	css21,
+	css2,
 	css-syntax-3,
 	css-style-attr,
 	mediaqueries-3,
@@ -1001,7 +1001,7 @@ Safe to Release pre-CR Exceptions</h2>
 At-Rule Index</h3>
 
 <index type="at-rule" status="TR" spec="
-	css21,
+	css2,
 	css-syntax-3,
 	css-style-attr,
 	mediaqueries-3,
@@ -1045,7 +1045,7 @@ At-Rule Index</h3>
 <h3 id="properties">Property Index</h3>
 
 <index type="property" status="TR" spec="
-	css21,
+	css2,
 	css-syntax-3,
 	css-style-attr,
 	mediaqueries-3,
@@ -1089,7 +1089,7 @@ At-Rule Index</h3>
 <h3 id="values">Values Index</h3>
 
 <index type="value" status="TR" spec="
-	css21,
+	css2,
 	css-syntax-3,
 	css-style-attr,
 	mediaqueries-3,