trusty: test-vm: Fix image name mismatch in config file

Bug:
Test: Build/Run atest TrustyTestVM_UnitTests and check files on target.
Change-Id: Icd3cf7920cd69d00a25d427b622c96fcda011d13
diff --git a/guest/trusty/test_vm/trusty-test_vm-config-arm64.json b/guest/trusty/test_vm/trusty-test_vm-config-arm64.json
index 18b275e..af79d05 100644
--- a/guest/trusty/test_vm/trusty-test_vm-config-arm64.json
+++ b/guest/trusty/test_vm/trusty-test_vm-config-arm64.json
@@ -1,6 +1,6 @@
 {
     "name": "trusty_test_vm",
-    "kernel": "/data/local/tmp/trusty_test_vm/trusty_test_vm_.elf",
+    "kernel": "/data/local/tmp/trusty_test_vm/trusty_test_vm.elf",
     "platform_version": "1.0",
     "memory_mib": 112,
     "protected": true