health HAL: update description + naming

Update some undefined behavior + variable naming

Bug: 371322457
Test: th
Change-Id: Ic13b275d84b1fef52923afb906ecbff7eee39bfe
diff --git a/health/aidl/vts/functional/VtsHalHealthTargetTest.cpp b/health/aidl/vts/functional/VtsHalHealthTargetTest.cpp
index c47ddca..a44cd5e 100644
--- a/health/aidl/vts/functional/VtsHalHealthTargetTest.cpp
+++ b/health/aidl/vts/functional/VtsHalHealthTargetTest.cpp
@@ -368,7 +368,8 @@
     ASSERT_THAT(status, AnyOf(IsOk(), ExceptionIs(EX_UNSUPPORTED_OPERATION)));
     if (!status.isOk()) return;
     for (auto& hinge : value) {
-        ASSERT_TRUE(hinge.expectedHingeLifespan > 0);
+        ASSERT_TRUE(hinge.expectedHingeLifespan >= 0);
+        ASSERT_TRUE(hinge.numTimesFolded >= 0);
     }
 }