core-deps: build wayland without documentation

make[3]: Entering directory
'/home/mcatanzaro/jhbuild/checkout/wayland/doc/publican'
  GEN      en-US/images
  GEN      en-US
  GEN      en-US/ProtocolInterfaces.xml
/bin/sh: en-US/ProtocolInterfaces.xml: No such file or directory
  GEN      Wayland/en-US/html/images
  GEN      Wayland/en-US/html/css
Makefile:528: recipe for target 'en-US/ProtocolInterfaces.xml' failed
make[3]: *** [en-US/ProtocolInterfaces.xml] Error 1#	modified:   modulesets/gnome-suites-core-deps-3.16.modules