Select the parameters instead of the whole string

textmate/scheme.tmbundle#10

Author: jeandeaual

syntaxes/scheme.tmLanguage.yaml

@@ -202,7 +202,7 @@ repository:
             name: punctuation.definition.function.scheme
           "3":
             name: entity.name.function.scheme
-          "4":
+          "6":
             name: variable.parameter.function.scheme
           "7":
             name: punctuation.definition.function.scheme