TEST_MAPPING: test dependers of this crate

Bug: 168167373
Test: TH
Change-Id: Id408885ee45c2c238933041ac98a4ac23d243a88
diff --git a/TEST_MAPPING b/TEST_MAPPING
index cd99d5d..7d1919a 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -2,8 +2,8 @@
 {
   "presubmit": [
     {
-      "name": "futures-util_host_test_src_lib",
-      "host": true
+      "host": true,
+      "name": "futures-util_host_test_src_lib"
     },
     {
       "name": "futures-util_device_test_src_lib"