Update language to comply with Android's inclusive language guidance

See https://source.android.com/setup/contribute/respectful-code for reference

#inclusivefixit

Bug: 161896447
Change-Id: I389684e574684566cd500244e0c22bc7a309756e
Test: Build pass
diff --git a/omaha_request_action.cc b/omaha_request_action.cc
index e37ebab..95e1250 100644
--- a/omaha_request_action.cc
+++ b/omaha_request_action.cc
@@ -952,10 +952,10 @@
     int code = GetHTTPResponseCode();
     LOG(ERROR) << "Omaha request network transfer failed with HTTPResponseCode="
                << code;
-    // Makes sure we send sane error values.
+    // Makes sure we send proper error values.
     if (code < 0 || code >= 1000) {
       code = 999;
-      LOG(WARNING) << "Converting to sane HTTPResponseCode=" << code;
+      LOG(WARNING) << "Converting to proper HTTPResponseCode=" << code;
     }
     completer.set_code(static_cast<ErrorCode>(
         static_cast<int>(ErrorCode::kOmahaRequestHTTPResponseBase) + code));