Use backticks not vertical bars to denote variables in comments for /video

Bug: webrtc:12338
Change-Id: I47958800407482894ff6f17c1887dce907fdf35a
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/227030
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#34585}
diff --git a/video/end_to_end_tests/bandwidth_tests.cc b/video/end_to_end_tests/bandwidth_tests.cc
index 7217383..3d1e61b 100644
--- a/video/end_to_end_tests/bandwidth_tests.cc
+++ b/video/end_to_end_tests/bandwidth_tests.cc
@@ -94,7 +94,7 @@
 
   ~BandwidthStatsTest() override {
     // Block until all already posted tasks run to avoid races when such task
-    // accesses |this|.
+    // accesses `this`.
     SendTask(RTC_FROM_HERE, task_queue_, [] {});
   }
 
@@ -206,7 +206,7 @@
 
     ~BweObserver() override {
       // Block until all already posted tasks run to avoid races when such task
-      // accesses |this|. Also make sure we free |rtp_rtcp_| on the correct
+      // accesses `this`. Also make sure we free `rtp_rtcp_` on the correct
       // thread/task queue.
       SendTask(RTC_FROM_HERE, task_queue_, [this]() { rtp_rtcp_ = nullptr; });
     }