Rewrite some comments in coverage_report.py.

Better convey what the comments really mean.

Change-Id: Ifa64b6ced686662d0957377e7d8051087424103c
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/73172
Reviewed-by: Daniel Hosseinian <dhoss@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/testing/tools/coverage/coverage_report.py b/testing/tools/coverage/coverage_report.py
index e92d62d0..7261390 100755
--- a/testing/tools/coverage/coverage_report.py
+++ b/testing/tools/coverage/coverage_report.py
@@ -247,7 +247,7 @@
     coverage_args += ['-o', report_directory]
     coverage_args += self.build_targets
 
-    # Whitelist the directories of interest
+    # Only analyze the directories of interest.
     coverage_args += ['-f', 'core']
     coverage_args += ['-f', 'fpdfsdk']
     coverage_args += ['-f', 'fxbarcode']
@@ -256,7 +256,7 @@
     coverage_args += ['-f', 'samples']
     coverage_args += ['-f', 'xfa']
 
-    # Blacklist test files
+    # Ignore test files.
     coverage_args += ['-i', '.*test.*']
 
     # Component view is only useful for Chromium