Several minor doc fixes

pkgs/racket-pkgs/racket-doc/scribblings/reference/time.scrbl

@@ -50,7 +50,7 @@ reflects a date in UTC.}
                  [time-zone-offset exact-integer?])
                 #:inspector #f]{
 
-Represents a date. The @racket[second] field reaches @racket[60] only
+Represents a date. The @racket[_second] field reaches @racket[60] only
 for leap seconds. The @racket[week-day] field is @racket[0] for
 Sunday, @racket[1] for Monday, etc. The @racket[year-day] field is
 @racket[0] for January 1, @racket[1] for January 2, @|etc|; the

pkgs/racket-pkgs/racket-doc/syntax/scribblings/id-table.scrbl

@@ -15,7 +15,7 @@ are available in both mutable and immutable variants.
 
 A free-identifier table is a dictionary whose keys are compared using
 @racket[free-identifier=?]. Free-identifier tables implement the
-dictionary interface of @racket[racket/dict], so all of the
+dictionary interface of @racketmodname[racket/dict], so all of the
 appropriate generic functions (@racket[dict-ref], @racket[dict-map],
 etc) can be used on free-identifier tables.
 
@@ -170,7 +170,7 @@ the contract accepts only mutable identifier tables.
 
 A bound-identifier table is a dictionary whose keys are compared using
 @racket[bound-identifier=?]. Bound-identifier tables implement the
-dictionary interface of @racket[racket/dict], so all of the
+dictionary interface of @racketmodname[racket/dict], so all of the
 appropriate generic functions (@racket[dict-ref], @racket[dict-map],
 etc) can be used on bound-identifier tables.
 

pkgs/racket-pkgs/racket-doc/syntax/scribblings/kerncase.scrbl

@@ -17,7 +17,7 @@
 
 A syntactic form like @racket[syntax-case*], except that the literals
 are built-in as the names of the primitive Racket forms as
-exported by @racketmodname[scheme/base], including 
+exported by @racketmodname[racket/base], including
 @racket[letrec-syntaxes+values]; see @secref[#:doc refman
 "fully-expanded"].
 

pkgs/racket-pkgs/racket-doc/syntax/scribblings/stx.scrbl

@@ -1,5 +1,7 @@
 #lang scribble/doc
-@(require "common.rkt" (for-label syntax/stx))
+@(require "common.rkt"
+          (for-label racket/include
+                     syntax/stx))
 
 @(require scribble/eval)
 @(define stx-eval (make-base-eval))

pkgs/racket-pkgs/racket-doc/syntax/scribblings/to-string.scrbl

@@ -1,5 +1,7 @@
 #lang scribble/doc
-@(require "common.rkt" (for-label syntax/to-string))
+@(require "common.rkt"
+          (for-label syntax/stx
+                     syntax/to-string))
 
 @title[#:tag "to-string"]{Rendering Syntax Objects with Formatting}