roll: third_party/pigweed pw_bluetooth_sapphire: Fix spec reference in comment

Update a comment with the appropriate core spec reference.

Original-Bug: 42179331
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/341492
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Original-Revision: b07381c8875842c3767d647f4f474d8882cc5b0e

Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: 891adf6e985ac1..b07381c8875842
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8698884591189466721
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ied49104c940d3b726cbf4fde21f855f0eb33c855
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/341912
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Bot-Commit: 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 891adf6..b07381c 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 891adf6e985ac1acee6135de4b09959ce6285343
+Subproject commit b07381c8875842c3767d647f4f474d8882cc5b0e