* module/ice-9/boot-9.scm: Fix comment about "local-define!", whereas
it's "local-define". Same for "local-remove".
;;;
;;; local-ref name == nested-ref (current-module) name
;;; local-set! name val == nested-set! (current-module) name val
-;;; local-define! name val == nested-define! (current-module) name val
-;;; local-remove! name == nested-remove! (current-module) name
+;;; local-define name val == nested-define! (current-module) name val
+;;; local-remove name == nested-remove! (current-module) name
;;;