fix the path of testgrid config file
@@ -18,6 +18,6 @@ PROW_HOST := https://prow.knative.dev
TESTGRID_GCS := knative-testgrid
KNATIVE_CONFIG := config_knative.yaml
-TESTGRID_CONFIG ?= testgrid/testgrid.yaml
+TESTGRID_CONFIG ?= prow/testgrid/testgrid.yaml
include ../prow_common.mk
