Use backticks not vertical bars to denote variables in comments

Bug: webrtc:12338
Change-Id: I89c8b3a328d04203177522cbdfd9e606fd4bce4c
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/228246
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#34696}
diff --git a/modules/audio_coding/neteq/neteq_impl_unittest.cc b/modules/audio_coding/neteq/neteq_impl_unittest.cc
index 875e62c..b0fee47 100644
--- a/modules/audio_coding/neteq/neteq_impl_unittest.cc
+++ b/modules/audio_coding/neteq/neteq_impl_unittest.cc
@@ -510,7 +510,7 @@
   EXPECT_EQ(1u, output.num_channels_);
   EXPECT_EQ(AudioFrame::kNormalSpeech, output.speech_type_);
 
-  // Verify |output.packet_infos_|.
+  // Verify `output.packet_infos_`.
   ASSERT_THAT(output.packet_infos_, SizeIs(1));
   {
     const auto& packet_info = output.packet_infos_[0];
@@ -602,7 +602,7 @@
   EXPECT_EQ(1u, output.num_channels_);
   EXPECT_EQ(AudioFrame::kNormalSpeech, output.speech_type_);
 
-  // Verify |output.packet_infos_|.
+  // Verify `output.packet_infos_`.
   ASSERT_THAT(output.packet_infos_, SizeIs(1));
   {
     const auto& packet_info = output.packet_infos_[0];
@@ -648,7 +648,7 @@
   // out-of-order packet should have been discarded.
   EXPECT_TRUE(packet_buffer_->Empty());
 
-  // Verify |output.packet_infos_|. Expect to only see the second packet.
+  // Verify `output.packet_infos_`. Expect to only see the second packet.
   ASSERT_THAT(output.packet_infos_, SizeIs(1));
   {
     const auto& packet_info = output.packet_infos_[0];