roll: third_party/pigweed pw_log: Fix doc comment

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/342052
Original-Revision: 9c0904edeb39647913624fc0e04b8c61c11ab2bb

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: a69ab7a9fec5c6..9c0904edeb3964
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8698819910868760225
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I4ab005dc61b0bc7884b686689b72f4c565dbbb7a
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/342312
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index a69ab7a..9c0904e 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit a69ab7a9fec5c6857f021c66872db63fbaf5ca2c
+Subproject commit 9c0904edeb39647913624fc0e04b8c61c11ab2bb