[roll third_party/pigweed] pw_tokenizer: Polish the sales pitch

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/163571

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 9361d8abd4dab70..8228249ec9925e1
Roller-URL: https://ci.chromium.org/b/8773285339210365297
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I75bba1adb47bba85d3725cae9280c195dec8dff9
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/164330
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 9361d8a..8228249 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 9361d8abd4dab7022c46a609499a8fba4016635f
+Subproject commit 8228249ec9925e1e17e4eda788d8da7d8f6b1535