fix zip target for wts-acts build

Bug: b/62102556
Change-Id: I3315d82b26e98a19115a57dd780f0c6faacb5e9a
diff --git a/Android.mk b/Android.mk
index be8e9f4..4040a1c 100644
--- a/Android.mk
+++ b/Android.mk
@@ -45,7 +45,7 @@
 	@mkdir -p $(WTS_ACTS_DISTRO_DIR)
 	# grab the files from local acts framework and zip them up
 	$(hide) find $(WTS_LOCAL_ACTS_DIR) | sort >$@.list
-	$(hide) $(SOONG_ZIP) -d -P acts -o $@ -C tools/test/connectivity/acts/framework/acts/ -l $@.list
+	$(hide) $(SOONG_ZIP) -d -P acts -o $(WTS_ACTS_DISTRO_ARCHIVE) -C tools/test/connectivity/acts/framework/acts/ -l $@.list
 	# add in the local wts py files for use with the prebuilt
 	$(hide) zip -r $(WTS_ACTS_DISTRO_ARCHIVE) -j tools/test/connectivity/wts-acts/*.py
 	# create executable tool from the archive