weston.ini.in: Update path to weston-flower

Ever since the autotools flattening, the launcher for weston-flower
contained an incorrect path...
diff --git a/weston.ini.in b/weston.ini.in
index 5181a9e..2c39177 100644
--- a/weston.ini.in
+++ b/weston.ini.in
@@ -35,7 +35,7 @@
 
 [launcher]
 icon=/usr/share/icons/gnome/24x24/apps/arts.png
-path=@abs_top_builddir@/clients/weston-flower
+path=@abs_top_builddir@/weston-flower
 
 [screensaver]
 # Uncomment path to disable screensaver