[roll third_party/pigweed] pw_emu: Link all the docs to each other

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/184310

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 728cae2995c2f83..705e27d3c5a4497
Roller-URL: https://ci.chromium.org/b/8762310904613082753
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I145d2a38abacb6239cd848fe9ed8d037d25ff504
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/184327
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 728cae2..705e27d 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 728cae2995c2f83897ca7af3fb716f0725968d04
+Subproject commit 705e27d3c5a44973475f91ffda0453ead2b17b36