remove whitespace

content/reference/special_forms.adoc

@@ -109,7 +109,7 @@ If the _binding_ symbol metadata tag is a Java interface annotated as a https://
       ^java.util.function.Predicate pred even?]
   (.removeIf coll pred) ;; mutate coll
   coll)
--> [1 3 5 7 9]  
+-> [1 3 5 7 9]
 ----
 
 See <<special_forms#binding-forms,Binding Forms>> for more information about binding forms.