define-struct:' -> struct:' in docs.

Fix typo.

collects/typed-scheme/scribblings/begin.scrbl

@@ -23,7 +23,7 @@ are provided as well; for example, the
 @racketmodname[typed/racket/base] language corresponds to
 @racketmodname[racket/base].   
 
-@racketblock[(define-struct: pt ([x : Real] [y : Real]))]
+@racketblock[(struct: pt ([x : Real] [y : Real]))]
 
 @margin-note{Many forms in Typed Racket have the same name as the
 untyped forms, with a @racket[:] suffix.}
@@ -31,10 +31,10 @@ This defines a new structure, name @racket[pt], with two fields,
 @racket[x] and @racket[y].  Both fields are specified to have the type
 @racket[Real], which corresponds to the @rtech{real numbers}.
  The
-@racket[define-struct:] form corresponds to the @racket[define-struct]
+@racket[struct:] form corresponds to the @racket[struct]
 form from @racketmodname[racket]---when porting a program from
 @racketmodname[racket] to @racketmodname[typed/racket], uses of
-@racket[define-struct] should be changed to @racket[define-struct:].
+@racket[struct] should be changed to @racket[struct:].
 
 @racketblock[(: mag (pt -> Number))]
 
@@ -71,8 +71,8 @@ represent these using @italic{union types}, written @racket[(U t1 t2 ...)].
 @racketmod[
 typed/racket
 (define-type Tree (U leaf node))
-(define-struct: leaf ([val : Number]))
-(define-struct: node ([left : Tree] [right : Tree]))
+(struct: leaf ([val : Number]))
+(struct: node ([left : Tree] [right : Tree]))
 
 (: tree-height (Tree -> Integer))
 (define (tree-height t)

collects/typed-scheme/scribblings/ts-reference.scrbl

@@ -397,7 +397,7 @@ corresponding to @racket[define-struct].}
 @defform/subs[
 (define-struct/exec: name-spec ([f : t] ...) [e : proc-t])
 ([name-spec name (name parent)])]{
- Like @racket[define-struct:], but defines an procedural structure.  
+ Like @racket[define-struct:], but defines a procedural structure.  
  The procdure @racket[e] is used as the value for @racket[prop:procedure], and must have type @racket[proc-t].}
 
 @subsection{Names for Types}

collects/typed-scheme/scribblings/types.scrbl

@@ -102,12 +102,12 @@ refers to the whole binary tree type within the body of the
 
 @section{Structure Types}
 
-Using @racket[define-struct:] introduces new types, distinct from any
+Using @racket[struct:] introduces new types, distinct from any
 previous type.    
 
-@racketblock[(define-struct: point ([x : Real] [y : Real]))]
+@racketblock[(struct: point ([x : Real] [y : Real]))]
 
-Instances of this structure, such as @racket[(make-point 7 12)], have type @racket[point].
+Instances of this structure, such as @racket[(point 7 12)], have type @racket[point].
 
 @section{Subtyping}
 
@@ -172,25 +172,25 @@ an analog of the @tt{Maybe} type constructor from Haskell:
 
 @racketmod[
 typed/racket
-(define-struct: None ())
-(define-struct: (a) Some ([v : a]))
+(struct: None ())
+(struct: (a) Some ([v : a]))
 
 (define-type (Opt a) (U None (Some a)))
 
 (: find (Number (Listof Number) -> (Opt Number)))
 (define (find v l)
-  (cond [(null? l) (make-None)]
-        [(= v (car l)) (make-Some v)]
+  (cond [(null? l) (None)]
+        [(= v (car l)) (Some v)]
         [else (find v (cdr l))]))
 ]
 
-The first @racket[define-struct:] defines @racket[None] to be
+The first @racket[struct:] defines @racket[None] to be
 a structure with no contents.  
 
 The second definition
 
 @racketblock[
-(define-struct: (a) Some ([v : a]))
+(struct: (a) Some ([v : a]))
 ]
 
 creates a parameterized type, @racket[Just], which is a structure with
@@ -207,8 +207,8 @@ creates a parameterized type --- @racket[Opt] is a potential
 container for whatever type is supplied.
 
 The @racket[find] function takes a number @racket[v] and list, and
-produces @racket[(make-Some v)] when the number is found in the list,
-and @racket[(make-None)] otherwise.  Therefore, it produces a
+produces @racket[(Some v)] when the number is found in the list,
+and @racket[(None)] otherwise.  Therefore, it produces a
 @racket[(Opt Number)], just as the annotation specified.  
 
 @subsection{Polymorphic Functions}