Record printer fixes

* doc/ref/srfi-modules.texi: Fix style

* module/srfi/srfi-9/gnu.scm (set-record-type-printer!): renamed from set-record-printer!

doc/ref/srfi-modules.texi

@@ -1922,30 +1922,24 @@ The functions created by @code{define-record-type} are ordinary
 top-level @code{define}s.  They can be redefined or @code{set!} as
 desired, exported from a module, etc.
 
-@menu
-* SRFI-9 Custom printers::      Customizing print behavior.
-@end menu
-
-@node SRFI-9 Custom printers
-@subsubsection Custom printers
-@cindex record printer
+@unnumberedsubsubsec Custom Printers
 
 You may use @code{set-record-printer!} to customize the default printing
-behavior of records. This is a GUILE extension and is not part of SRFI-9. It is
+behavior of records. This is a Guile extension and is not part of SRFI-9. It is
 located in the @nicode{(srfi srfi-9 gnu)} module.
 
-@deffn {library syntax} set-record-printer! name thunk
+
+@deffn {Scheme Syntax} set-record-printer! name thunk
 Where @var{type} corresponds to the first argument of @code{define-record-type},
 and @var{thunk} is a procedure accepting two arguments, the record to print, and
 an output port.
-
 @end deffn
 
 @noindent
-This example prints the employee's name in brackets, for instance ``@code{[Fred]}''.
+This example prints the employee's name in brackets, for instance @code{[Fred]}.
 
 @example
-(set-record-printer! employee-type
+(set-record-type-printer! employee-type
   (lambda (record port)
     (write-char #\[ port)
     (display (get-employee-name record) port)

module/srfi/srfi-9/gnu.scm

@@ -23,7 +23,8 @@
 ;;; Code:
 
 (define-module (srfi srfi-9 gnu)
-  #:export (set-record-printer!))
+  #:export (set-record-type-printer!))
 
-(define (set-record-printer! type thunk)
+(define (set-record-type-printer! type thunk)
+  "Set a custom printer THUNK for TYPE."
   (struct-set! type vtable-index-printer thunk))