Add missing Clojure highlighting

bbatsov · bbatsov · commit a889b9cbd94d · 2022-07-24T14:57:31.000+03:00
diff --git a/README.adoc b/README.adoc
@@ -578,6 +578,7 @@ Avoid trailing whitespace.
 
 Use one file per namespace and one namespace per file.
 
+[source,clojure]
 ----
 ;; good
 (ns foo.bar)
