make footer-display false by default

quad/quad/scribblings/quad.scrbl

@@ -541,7 +541,7 @@ Columns per page. @racket[column-count] is a positive integer; @racket[column-ga
 }
 
 @defthing[#:kind "attribute" footer-display symbol?]{
-Whether footer is displayed. Default is @racket["true"]. Footer is suppressed if this value is @racket["none"] or @racket["false"].
+Whether footer is displayed. Default is @racket["false"]. Footer is suppressed if this value is @racket["none"] or @racket["false"].
 }
 
 @defthing[#:kind "attribute" footer-text symbol?]{

quad/quadwriter/page.rkt

@@ -89,7 +89,7 @@
                         [else (raise-argument-error 'page-wrap-finish "quad with attrs" (list cols q-after q-before))]))
   (define elems
     (append
-     (match (quad-ref q-for-attrs :footer-display #true)
+     (match (quad-ref q-for-attrs :footer-display #false)
        [(or #false "none") null]
        [_ (list (make-footer-quad q-for-attrs page-idx path))])
      (from-parent cols 'nw)))