*: Run buildifier on BUILD files

Change-Id: I7a7a14bfea1de804599f60cd45310f6eadb49370
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/45442
Pigweed-Auto-Submit: Rob Mohr <mohrr@google.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed.google.com.iam.gserviceaccount.com>
Reviewed-by: Akira Baruah <akirabaruah@google.com>
diff --git a/pw_thread/BUILD b/pw_thread/BUILD
index 9c8c456..828ccc9 100644
--- a/pw_thread/BUILD
+++ b/pw_thread/BUILD
@@ -88,8 +88,8 @@
 pw_cc_facade(
     name = "thread_facade",
     hdrs = [
-        "public/pw_thread/thread.h",
         "public/pw_thread/detached_thread.h",
+        "public/pw_thread/thread.h",
     ],
     includes = ["public"],
     deps = [