glossary.dd: Fix LNAME2 invocation

glossary.dd

@@ -248,7 +248,7 @@ void test()
 	$(DD $(LINK2 attribute.html#uda, $(I User-defined attributes)) are metadata
 	attached to symbols used for compile-time reflection.)
 
-	$(DT $(LNAME2 ufcs $(ACRONYM UFCS, Uniform Function Call Syntax)))
+	$(DT $(LNAME2 ufcs, $(ACRONYM UFCS, Uniform Function Call Syntax)))
 	$(DD $(LINK2 function.html#pseudo-member, Uniform function call syntax)
 	refers to the ability to call a function as if it were a method of its first
 	argument. For example `funct(arg)` may be written as `arg.funct()`.)