Fix install path for XKBcommon.h
diff --git a/include/Makefile.am b/include/Makefile.am
index 5ff1a97..73028a3 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -1,2 +1,2 @@
-x11includedir = $(includedir)/extensions/X11
+x11includedir = $(includedir)/X11/extensions
x11include_HEADERS = X11/extensions/XKBcommon.h