made clean more robust

Change-Id: Ic83b2574e5f9d5efd57d1792137e16dc282f3a06
diff --git a/docs/Makefile b/docs/Makefile
index d6ccfd1..371c8ad 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -17,6 +17,10 @@
 	rm test; \
 	rm profiles; \
 	rm xos; \
-	rm xos-gui
-
+	rm xos-gui; \
+	rm -f ../platform-install/docs/docs; \
+	rm -f ../../test/cord-tester/docs/docs; \
+	rm -f ../../orchestration/xos/docs/docs; \
+	rm -f ../../orchestration/xos-gui/docs/docs; \
+	rm -f ../../orchestration/profiles/profiles