Update language to comply with Android's inclusive language guidance am: fc24afe255 am: 47671da956 am: eb0aedb40e

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/1375937

Change-Id: I59651257e32b9875743e55b748d444c7836c921c
diff --git a/payload_consumer/postinstall_runner_action_unittest.cc b/payload_consumer/postinstall_runner_action_unittest.cc
index 0041d31..cf5158b 100644
--- a/payload_consumer/postinstall_runner_action_unittest.cc
+++ b/payload_consumer/postinstall_runner_action_unittest.cc
@@ -227,7 +227,7 @@
   EXPECT_TRUE(processor_delegate_.processing_stopped_called_ ||
               processor_delegate_.processing_done_called_);
   if (processor_delegate_.processing_done_called_) {
-    // Sanity check that the code was set when the processor finishes.
+    // Validation check that the code was set when the processor finishes.
     EXPECT_TRUE(processor_delegate_.code_set_);
   }
 }