Add a bug reference to the use of the option for ignoring banned words

Bug: b/260680525
Change-Id: Id5530406944d0f3849c44703a24451619ddbe341
diff --git a/tools/r8_release.py b/tools/r8_release.py
index 26bd8ed..fe921e2 100755
--- a/tools/r8_release.py
+++ b/tools/r8_release.py
@@ -193,6 +193,7 @@
       # Don't upload if requested not to, or if changes are not committed due
       # to --use-existing-work-branch
       if not options.no_upload and not options.use_existing_work_branch:
+        # TODO(b/260680525): Consider removing "-o banned-words~skip" if b/260680525 is resolved.
         process = subprocess.Popen(['repo', 'upload', '.', '--verify', '-o' 'banned-words~skip'],
                                    stdin=subprocess.PIPE)
         return process.communicate(input=b'y\n')[0]