doc: rename "Wayland" to "publican"

This directory was called Wayland during my early tries with publican where
the source layout was different and it needed to be set to the same name as
the publican output directory. This reason doesn't exist anymore, so re-name
it to publican to make it more obvious what's hiding in here.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

configure.ac

@@ -121,7 +121,7 @@ AC_CONFIG_FILES([Makefile
 		 cursor/wayland-cursor.pc
 		 cursor/wayland-cursor-uninstalled.pc
 		 doc/Makefile
-		 doc/Wayland/Makefile
+		 doc/publican/Makefile
 		 doc/doxygen/Makefile
 		 doc/man/Makefile
 		 src/Makefile

doc/Makefile.am

@@ -1 +1 @@
-SUBDIRS = doxygen Wayland man
+SUBDIRS = doxygen publican man