racket: don't build docs as it causes failures sometimes

(cherry picked from commit 1a392bd62e4d8ff92ec92ebe48912b8295714e2e)
Signed-off-by: Domen Kožar <domen@dev.si>

Changed files
+1 -1
pkgs
development
interpreters
racket
+1 -1
pkgs/development/interpreters/racket/default.nix
···
cd src/build
'';
-
configureFlags = [ "--enable-shared" "--enable-lt=${libtool}/bin/libtool" ];
+
configureFlags = [ "--enable-shared" "--enable-lt=${libtool}/bin/libtool" "--disable-docs"];
configureScript = "../configure";