[css-fonts-4][editorial] re-apply addition of monospace to generics, see #10559

Author: svgeesus

css-fonts-4/Overview.bs

@@ -377,7 +377,7 @@ Syntax of <<generic-family>>
 <pre class=prod>
 	<dfn><<generic-family>></dfn> = <<generic-script-specific>>| <<generic-complete>> | <<generic-incomplete>>
 	<dfn><<generic-script-specific>></dfn> = ''generic(kai)'' | ''generic(fangsong)'' | ''generic(nastaliq)''
-	<dfn><<generic-complete>></dfn> = ''serif'' | ''sans-serif'' | ''system-ui'' | ''cursive'' | ''fantasy'' | ''math''
+	<dfn><<generic-complete>></dfn> = ''serif'' | ''sans-serif'' | ''system-ui'' | ''cursive'' | ''fantasy'' | ''math'' | ''monospace''
 	<dfn><<generic-incomplete>></dfn> = ''ui-serif'' | ''ui-sans-serif'' | ''ui-monospace'' | ''ui-rounded''
 </pre>