[roll third_party/pigweed] pigweed_bluetooth: protocol.h comments tweak

Super minor tweaks to make comments consistent for opcodes.

Test: Tested in presubmit step gn_chre_googletest_nanopb_sapphire_build
Original-Bug: 326499650
Original-Bug: 326499611
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/199532

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 460176817477441..c59bb69e5e17000
Roller-URL: https://ci.chromium.org/b/8752434213395522225
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I609d682dc8126ef5ceff8850b359f295e5855167
Reviewed-on: https://pigweed-review.googlesource.com/c/example/echo/+/199970
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 4601768..c59bb69 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 46017681747744133f4919fb891dfaf52c7bd7b1
+Subproject commit c59bb69e5e17000c4120e26c7fc26c309d9f28ce