move link-tt to mb-tools

scribblings/mb-tools.rkt

@@ -5,6 +5,8 @@
 
 (define-runtime-path mb-css "mb.css")
 
+(define (link-tt url) (link url (tt url)))
+
 (define (racketfont* . args)
   (element 'tt args))
 

scribblings/quick.scrbl

@@ -4,8 +4,6 @@
 
 @title[#:tag "quick-tour"]{Quick tour}
 
-@(define (link-tt url) (link url (tt url)))
-
 
 @section{Creating a source file}