pw_presubmit: Add TODO about removing "whitelist"

Change-Id: I3652f9faf674dce8244cee5942d3fd6de0106804
Bug: 280
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/20780
Reviewed-by: Keir Mierle <keir@google.com>
Commit-Queue: Rob Mohr <mohrr@google.com>
diff --git a/.pylintrc b/.pylintrc
index c1f8560..53635ca 100644
--- a/.pylintrc
+++ b/.pylintrc
@@ -3,6 +3,7 @@
 # A comma-separated list of package or module names from where C extensions may
 # be loaded. Extensions are loading into the active Python interpreter and may
 # run arbitrary code.
+# TODO(pwbug/280) Change "whitelist" to "allowlist". (Blocked on pylint.)
 extension-pkg-whitelist=mypy
 
 # Add files or directories to the blocklist. They should be base names, not